Big House Party

Twitter pic post! Zac Efron promoted That Awkward Moment in Miami with his co-star Michael B. Jordan.

Little Mix had fun in Tokyo and Nolan Gould prepped for the Australian episode of Modern Family. Victoria Justice attended a pre-Grammy bash.

Lucy Hale continued her promotional tour and supported Team USA. David Henrie smiled with a co-star and Fifth Harmony smiled for a pic.

Demi Lovato debuted her now pink hair and Taylor Swift rehearsed for her Grammys performance. Troian Bellisario went out a blind date.

Bella Thorne cuddled her Blended co-star Drew Barrymore and Ariel Winter had a pre-birthday dinner. Ashley Benson met Lisa Vanderpump.

Justin Bieber shared a moody selfie and Ashley Tisdale dined with friends. Ariana Grande hung out with Camila Cabello.