Justin Bieber and Julianne Hough
Danny Martindale/Getty; Splash News Online
They're ready for their (15-second) close-ups!
Instagram launched its video service on Friday – where users can upload 15-second video clips to the photo-sharing service – and celebs spent the weekend making their directorial debuts.
Some stars, like Christie Brinkley, posted scenic shots of the sky. Others, like Julianne Hough
, stayed behind behind the camera as well to post funny shots of her friends.
And Justin Bieber
shared his wounds after falling down a flight of stairs.
Check out who else embraced their inner Martin Scorsese (and Alan Smithee) online!