Little brother steals the spotlight in sister's video

Little kids are adorable even when they are playing pranks.

You can't help but laugh when a little brother steals his sister's thunder in a YouTube video of her singing.

In the clip below, the little below comically dances behind his sister as she sings Robin Thicke's hit single 'Lost Without You'.

Planned or not, the video is one you would at least a couple of times.

Watch the video below;