diff --git a/src/room/InCallView.tsx b/src/room/InCallView.tsx
index ca71ff726..5872cfb44 100644
--- a/src/room/InCallView.tsx
+++ b/src/room/InCallView.tsx
@@ -74,6 +74,7 @@ import {
   useAppBarSubtitle,
 } from "../AppBar.tsx";
 import { useBehavior } from "../useBehavior.ts";
+import { constant } from "../state/Behavior.ts";
 import { Toast } from "../Toast.tsx";
 import overlayStyles from "../Overlay.module.css";
 import { useTrackProcessorObservable$ } from "../livekit/TrackProcessorContext.tsx";
@@ -433,6 +434,11 @@ export const InCallView: FC<InCallViewProps> = ({
         const showSpeakingIndicators = useBehavior(vm.showSpeakingIndicators$);
         const showNameTags = useBehavior(vm.showNameTags$);
         const showRingingStatus = vm.ringingStatusLocation === "tile";
+        const showOutline = useBehavior(
+          model instanceof GridTileViewModel
+            ? model.showOutline$
+            : constant(false),
+        );
 
         return model instanceof GridTileViewModel ? (
           <GridTile
@@ -446,6 +452,7 @@ export const InCallView: FC<InCallViewProps> = ({
             showSpeakingIndicators={showSpeakingIndicators}
             showNameTags={showNameTags}
             showRingingStatus={showRingingStatus}
+            showOutline={showOutline}
             focusable={!contentObscured}
           />
         ) : (
diff --git a/src/state/CallViewModel/CallViewModel.ts b/src/state/CallViewModel/CallViewModel.ts
index 378fe18ae..e39014e4b 100644
--- a/src/state/CallViewModel/CallViewModel.ts
+++ b/src/state/CallViewModel/CallViewModel.ts
@@ -155,6 +155,7 @@ import {
   createRingingMedia,
   type RingingMediaViewModel,
 } from "../media/RingingMediaViewModel.ts";
+import { type GridTileViewModel } from "../TileViewModel.ts";
 
 const logger = rootLogger.getChild("[CallViewModel]");
 //TODO
@@ -1482,6 +1483,7 @@ export function createCallViewModel$(
         ({ tiles: prevTiles }, [media, visibleTiles]) => {
           let layout: Layout;
           let newTiles: TileStore;
+          let pip: GridTileViewModel | undefined;
           switch (media.type) {
             case "grid":
             case "spotlight-landscape":
@@ -1507,6 +1509,7 @@ export function createCallViewModel$(
                 landscapePipAlignment$,
                 prevTiles,
               );
+              pip = layout.pip;
               break;
             case "one-on-one-portrait":
               [layout, newTiles] = oneOnOnePortraitLayout(
@@ -1515,12 +1518,17 @@ export function createCallViewModel$(
                 portraitPipAlignment$,
                 prevTiles,
               );
+              pip = layout.pip;
               break;
             case "pip":
               [layout, newTiles] = pipLayout(media, prevTiles);
               break;
           }
 
+          for (const tile of newTiles.gridTiles) {
+            tile.setShowOutline(tile === pip);
+          }
+
           return { layout, tiles: newTiles };
         },
         { layout: null, tiles: TileStore.empty() },
diff --git a/src/state/TileViewModel.ts b/src/state/TileViewModel.ts
index eeec0c889..81aac8298 100644
--- a/src/state/TileViewModel.ts
+++ b/src/state/TileViewModel.ts
@@ -5,6 +5,8 @@ SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 
+import { BehaviorSubject } from "rxjs";
+
 import { type Behavior } from "./Behavior";
 import { type MediaViewModel } from "./media/MediaViewModel";
 import { type RingingMediaViewModel } from "./media/RingingMediaViewModel";
@@ -17,12 +19,18 @@ function createId(): string {
 
 export class GridTileViewModel {
   public readonly id = createId();
+  private readonly _showOutline$ = new BehaviorSubject(false);
+  public readonly showOutline$: Behavior<boolean> = this._showOutline$;
 
   public constructor(
     public readonly media$: Behavior<
       UserMediaViewModel | RingingMediaViewModel
     >,
   ) {}
+
+  public setShowOutline(value: boolean): void {
+    this._showOutline$.next(value);
+  }
 }
 
 export class SpotlightTileViewModel {
diff --git a/src/tile/GridTile.module.css b/src/tile/GridTile.module.css
index 971b56906..3ebb9bf75 100644
--- a/src/tile/GridTile.module.css
+++ b/src/tile/GridTile.module.css
@@ -66,6 +66,11 @@ borders don't support gradients */
   opacity: 1;
 }
 
+.tile.outline {
+  outline: var(--cpd-border-width-1) solid
+    var(--cpd-color-border-interactive-secondary);
+}
+
 @media (hover: hover) {
   .tile:hover {
     outline: var(--cpd-border-width-2) solid
diff --git a/src/tile/GridTile.test.tsx b/src/tile/GridTile.test.tsx
index a44fcdfe4..3ee528755 100644
--- a/src/tile/GridTile.test.tsx
+++ b/src/tile/GridTile.test.tsx
@@ -78,6 +78,7 @@ test("GridTile is accessible", async () => {
         showSpeakingIndicators
         showNameTags
         showRingingStatus
+        showOutline
         focusable
       />
     </ReactionsSenderProvider>,
@@ -110,6 +111,7 @@ test("GridTile displays ringing media", async () => {
         showSpeakingIndicators
         showNameTags
         showRingingStatus
+        showOutline
         focusable
       />
     </ReactionsSenderProvider>,
diff --git a/src/tile/GridTile.tsx b/src/tile/GridTile.tsx
index 8e6096fb5..657bf0bc8 100644
--- a/src/tile/GridTile.tsx
+++ b/src/tile/GridTile.tsx
@@ -398,6 +398,7 @@ interface GridTileProps {
   showSpeakingIndicators: boolean;
   showNameTags: boolean;
   showRingingStatus: boolean;
+  showOutline: boolean;
   focusable: boolean;
 }
 
@@ -406,7 +407,9 @@ export const GridTile: FC<GridTileProps> = ({
   vm,
   showSpeakingIndicators,
   showRingingStatus,
+  showOutline,
   onOpenProfile,
+  className,
   ...props
 }) => {
   const ourRef = useRef<HTMLDivElement | null>(null);
@@ -423,6 +426,7 @@ export const GridTile: FC<GridTileProps> = ({
         displayName={displayName}
         mxcAvatarUrl={mxcAvatarUrl}
         showStatus={showRingingStatus}
+        className={classNames(className, { [styles.outline]: showOutline })}
         {...props}
       />
     );
@@ -435,6 +439,7 @@ export const GridTile: FC<GridTileProps> = ({
         onOpenProfile={onOpenProfile}
         displayName={displayName}
         mxcAvatarUrl={mxcAvatarUrl}
+        className={classNames(className, { [styles.outline]: showOutline })}
         {...props}
       />
     );
@@ -446,6 +451,7 @@ export const GridTile: FC<GridTileProps> = ({
         showSpeakingIndicators={showSpeakingIndicators}
         displayName={displayName}
         mxcAvatarUrl={mxcAvatarUrl}
+        className={classNames(className, { [styles.outline]: showOutline })}
         {...props}
       />
     );