19 Things Celebrities Did This Week

    From the completely random to the mundane, here are all of the noteworthy things that you probably missed for your viewing pleasure.

    Whitney Jefferson
    by Whitney Jefferson

    BuzzFeed Staff

    1. Britney Spears was welcomed to Las Vegas.

    Steve Marcus / Reuters

    2. Miley Crus twerked on Santa.

    Jason Merritt / Getty Images / Via buzzfeed.com

    3. Kate Middleton met Idris Elba.

    Chris Jackson / Getty Images / Via buzzfeed.com

    4. Celine Dion played a ukulele.

    CHP/FAMEFLYNET PICTURES

    5. Daniel Radcliffe wore fierce extensions.

    FameFlynetUK/FAMEFLYNET PICTURES / Via buzzfeed.com

    6. Mariah Carey officially christened the holiday season.

    Girlie/FAMEFLYNET PICTURES

    7. Katy Perry was named a Unicef ambassador.

    Lucas Jackson / Reuters

    8. Kevin Hart fangirled for Beyonce.

    Rob Hoffman / iam.beyonce.com / Via buzzfeed.com

    9. James Franco held a puppy.

    JKING/FAMEFLYNET PICTURES / Via buzzfeed.com

    10. Amy Poehler and Rashida Jones sat at a table.

    Monica Schipper / Getty Images

    11. Andrew Garfield wore dad jeans.

    Katryna/FAMEFLYNET PICTURES

    12. David Beckham & Harry Styles posed for this photo.

    Dave J Hogan / Getty Images

    13. Ashton Kutcher and Mila Kunis wore matching jerseys.

    FAMEFLYNET PICTURES

    14. Cameron Diaz filmed "Annie."

    AAR/FAMEFLYNET PICTURES

    15. Jennifer Garner and her son Samuel met a horse.

    Pablo/FAMEFLYNET PICTURES

    16. Billy Ray Cyrus went for a ride.

    CPR/FAMEFLYNET PICTURES / Via buzzfeed.com

    17. Adrien Grenier went for a run.

    Dasha/FAMEFLYNET PICTURES

    18. and Lady Gaga wore this...

    FameFlynetUK/FAMEFLYNET PICTURES / Via buzzfeed.com

    19. ...and then this.

    FameFlynetUK/FAMEFLYNET PICTURES / Via buzzfeed.com