diff --git a/docs/components/dialog.md b/docs/components/dialog.md
index 311551735..028ddff3c 100644
--- a/docs/components/dialog.md
+++ b/docs/components/dialog.md
@@ -151,6 +151,59 @@ const App = () => {
 };
 ```
 
+### Header Actions
+
+The header shows a functional close button by default. You can use the `header-actions` slot to add additional [icon buttons](/components/icon-button) if needed.
+
+```html preview
+<sl-dialog label="Dialog" class="dialog-header-actions">
+  <sl-icon-button class="new-window" slot="header-actions" name="box-arrow-up-right"></sl-icon-button>
+  Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+  <sl-button slot="footer" variant="primary">Close</sl-button>
+</sl-dialog>
+
+<sl-button>Open Dialog</sl-button>
+
+<script>
+  const dialog = document.querySelector('.dialog-header-actions');
+  const openButton = dialog.nextElementSibling;
+  const closeButton = dialog.querySelector('sl-button[slot="footer"]');
+  const newWindowButton = dialog.querySelector('.new-window');
+
+  openButton.addEventListener('click', () => dialog.show());
+  closeButton.addEventListener('click', () => dialog.hide());
+  newWindowButton.addEventListener('click', () => window.open(location.href));
+</script>
+```
+
+```jsx react
+import { useState } from 'react';
+import { SlButton, SlDialog, SlIconButton } from '@shoelace-style/shoelace/dist/react';
+
+const App = () => {
+  const [open, setOpen] = useState(false);
+
+  return (
+    <>
+      <SlDialog label="Dialog" open={open} onSlAfterHide={() => setOpen(false)}>
+        <SlIconButton
+          class="new-window"
+          slot="header-actions"
+          name="box-arrow-up-right"
+          onClick={() => window.open(location.href)}
+        />
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
+          Close
+        </SlButton>
+      </SlDialog>
+
+      <SlButton onClick={() => setOpen(true)}>Open Dialog</SlButton>
+    </>
+  );
+};
+```
+
 ### Preventing the Dialog from Closing
 
 By default, dialogs will close when the user clicks the close button, clicks the overlay, or presses the <kbd>Escape</kbd> key. In most cases, the default behavior is the best behavior in terms of UX. However, there are situations where this may be undesirable, such as when data loss will occur.
diff --git a/docs/components/drawer.md b/docs/components/drawer.md
index d11e70228..4120d44d9 100644
--- a/docs/components/drawer.md
+++ b/docs/components/drawer.md
@@ -338,6 +338,54 @@ const App = () => {
 };
 ```
 
+### Header Actions
+
+The header shows a functional close button by default. You can use the `header-actions` slot to add additional [icon buttons](/components/icon-button) if needed.
+
+```html preview
+<sl-drawer label="Drawer" class="drawer-header-actions">
+  <sl-icon-button class="new-window" slot="header-actions" name="box-arrow-up-right"></sl-icon-button>
+  Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+  <sl-button slot="footer" variant="primary">Close</sl-button>
+</sl-drawer>
+
+<sl-button>Open Drawer</sl-button>
+
+<script>
+  const drawer = document.querySelector('.drawer-header-actions');
+  const openButton = drawer.nextElementSibling;
+  const closeButton = drawer.querySelector('sl-button[variant="primary"]');
+  const newWindowButton = drawer.querySelector('.new-window');
+
+  openButton.addEventListener('click', () => drawer.show());
+  closeButton.addEventListener('click', () => drawer.hide());
+  newWindowButton.addEventListener('click', () => window.open(location.href));
+</script>
+```
+
+```jsx react
+import { useState } from 'react';
+import { SlButton, SlDrawer, SlIconButton } from '@shoelace-style/shoelace/dist/react';
+
+const App = () => {
+  const [open, setOpen] = useState(false);
+
+  return (
+    <>
+      <SlDrawer label="Drawer" open={open} onSlAfterHide={() => setOpen(false)}>
+        <SlIconButton slot="header-actions" name="box-arrow-up-right" onClick={() => window.open(location.href)} />
+        Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+        <SlButton slot="footer" variant="primary" onClick={() => setOpen(false)}>
+          Close
+        </SlButton>
+      </SlDrawer>
+
+      <SlButton onClick={() => setOpen(true)}>Open Drawer</SlButton>
+    </>
+  );
+};
+```
+
 ### Preventing the Drawer from Closing
 
 By default, drawers will close when the user clicks the close button, clicks the overlay, or presses the <kbd>Escape</kbd> key. In most cases, the default behavior is the best behavior in terms of UX. However, there are situations where this may be undesirable, such as when data loss will occur.
diff --git a/docs/resources/changelog.md b/docs/resources/changelog.md
index fefadba81..f55213985 100644
--- a/docs/resources/changelog.md
+++ b/docs/resources/changelog.md
@@ -10,10 +10,12 @@ New versions of Shoelace are released as-needed and generally occur when a criti
 
 ## Next
 
+- Added `header-actions` slot to `<sl-dialog>` and `<sl-drawer>`
 - Fixed a bug in `<sl-tree-item>` where `sl-selection-change` was emitted when the selection didn't change [#1030](https://github.com/shoelace-style/shoelace/pull/1030)
 - Improved IntelliSense in VS Code, courtesy of [Burton's amazing CEM Analyzer plugin](https://github.com/break-stuff/cem-plugin-vs-code-custom-data-generator)
 - Improved accessibility of `<sl-alert>` so the alert is announced and the close button has a label
 - Removed unused aria attributes from `<sl-skeleton>`
+- Replaced the `x` icon in the system icon library with `x-lg` to improve icon consistency
 
 ## 2.0.0-beta.85
 
diff --git a/src/components/dialog/dialog.styles.ts b/src/components/dialog/dialog.styles.ts
index b2b878d7c..dae772fbf 100644
--- a/src/components/dialog/dialog.styles.ts
+++ b/src/components/dialog/dialog.styles.ts
@@ -68,12 +68,21 @@ export default css`
     margin: 0;
   }
 
-  .dialog__close {
+  .dialog__header-actions {
+    flex-shrink: 0;
+    display: flex;
+    flex-wrap: wrap;
+    justify-content: end;
+    gap: var(--sl-spacing-2x-small);
+    padding: 0 var(--header-spacing);
+  }
+
+  .dialog__header-actions sl-icon-button,
+  .dialog__header-actions ::slotted(sl-icon-button) {
     flex: 0 0 auto;
     display: flex;
     align-items: center;
-    font-size: var(--sl-font-size-x-large);
-    padding: 0 var(--header-spacing);
+    font-size: var(--sl-font-size-medium);
   }
 
   .dialog__body {
diff --git a/src/components/dialog/dialog.ts b/src/components/dialog/dialog.ts
index 60613f8d4..c77030109 100644
--- a/src/components/dialog/dialog.ts
+++ b/src/components/dialog/dialog.ts
@@ -42,6 +42,7 @@ import type { CSSResultGroup } from 'lit';
  * @csspart overlay - The overlay.
  * @csspart panel - The dialog panel (where the dialog and its content is rendered).
  * @csspart header - The dialog header.
+ * @csspart header-actions - Optional actions to add to the header. Works best with `<sl-icon-button>`.
  * @csspart title - The dialog title.
  * @csspart close-button - The close button.
  * @csspart close-button__base - The close button's `base` part.
@@ -279,15 +280,18 @@ export default class SlDialog extends ShoelaceElement {
                   <h2 part="title" class="dialog__title" id="title">
                     <slot name="label"> ${this.label.length > 0 ? this.label : String.fromCharCode(65279)} </slot>
                   </h2>
-                  <sl-icon-button
-                    part="close-button"
-                    exportparts="base:close-button__base"
-                    class="dialog__close"
-                    name="x"
-                    label=${this.localize.term('close')}
-                    library="system"
-                    @click="${() => this.requestClose('close-button')}"
-                  ></sl-icon-button>
+                  <div part="header-actions" class="dialog__header-actions">
+                    <slot name="header-actions"></slot>
+                    <sl-icon-button
+                      part="close-button"
+                      exportparts="base:close-button__base"
+                      class="dialog__close"
+                      name="x-lg"
+                      label=${this.localize.term('close')}
+                      library="system"
+                      @click="${() => this.requestClose('close-button')}"
+                    ></sl-icon-button>
+                  </div>
                 </header>
               `
             : ''}
diff --git a/src/components/drawer/drawer.styles.ts b/src/components/drawer/drawer.styles.ts
index 674eafbdc..89ec7f517 100644
--- a/src/components/drawer/drawer.styles.ts
+++ b/src/components/drawer/drawer.styles.ts
@@ -99,12 +99,21 @@ export default css`
     margin: 0;
   }
 
-  .drawer__close {
+  .drawer__header-actions {
+    flex-shrink: 0;
+    display: flex;
+    flex-wrap: wrap;
+    justify-content: end;
+    gap: var(--sl-spacing-2x-small);
+    padding: 0 var(--header-spacing);
+  }
+
+  .drawer__header-actions sl-icon-button,
+  .drawer__header-actions ::slotted(sl-icon-button) {
     flex: 0 0 auto;
     display: flex;
     align-items: center;
-    font-size: var(--sl-font-size-x-large);
-    padding: 0 var(--header-spacing);
+    font-size: var(--sl-font-size-medium);
   }
 
   .drawer__body {
diff --git a/src/components/drawer/drawer.ts b/src/components/drawer/drawer.ts
index 75943d536..cce1d2244 100644
--- a/src/components/drawer/drawer.ts
+++ b/src/components/drawer/drawer.ts
@@ -43,6 +43,7 @@ import type { CSSResultGroup } from 'lit';
  * @csspart overlay - The overlay.
  * @csspart panel - The drawer panel (where the drawer and its content is rendered).
  * @csspart header - The drawer header.
+ * @csspart header-actions - Optional actions to add to the header. Works best with `<sl-icon-button>`.
  * @csspart title - The drawer title.
  * @csspart close-button - The close button.
  * @csspart close-button__base - The close button's `base` part.
@@ -310,15 +311,18 @@ export default class SlDrawer extends ShoelaceElement {
                     <!-- If there's no label, use an invisible character to prevent the header from collapsing -->
                     <slot name="label"> ${this.label.length > 0 ? this.label : String.fromCharCode(65279)} </slot>
                   </h2>
-                  <sl-icon-button
-                    part="close-button"
-                    exportparts="base:close-button__base"
-                    class="drawer__close"
-                    name="x"
-                    label=${this.localize.term('close')}
-                    library="system"
-                    @click=${() => this.requestClose('close-button')}
-                  ></sl-icon-button>
+                  <div part="header-actions" class="drawer__header-actions">
+                    <slot name="header-actions"></slot>
+                    <sl-icon-button
+                      part="close-button"
+                      exportparts="base:close-button__base"
+                      class="drawer__close"
+                      name="x-lg"
+                      label=${this.localize.term('close')}
+                      library="system"
+                      @click=${() => this.requestClose('close-button')}
+                    ></sl-icon-button>
+                  </div>
                 </header>
               `
             : ''}