Celeb Tracker: The 5 Best Photos of the Week

From the big Golden Globes nominations, to a newly-platinum Justin Bieber, here's what some of your favorite stars were up to this week.

Tasos Katapodis/Getty Images
Tasos Katapodis/Getty Images
1
Jessie J and Ariana Grande
The 'Bang Bang' gals reunite for a holiday concert in St. Paul Minnesota.
Allen Berezovsky/Getty Images
Allen Berezovsky/Getty Images
2
Justin Bieber
A bleach blonde Justin Bieber is barely recognizable as he stops to entertain fans outside West Coast Customs car shop in Burbank, California.
Michael Kovac/Getty Images
Michael Kovac/Getty Images
3
Kate Beckinsale and Jeremy Piven
The actors were all smiles in the wee hours Thursday morning in Hollywood for the announcement of the 72nd Annual Golden Globe Awards Nominations.
Jason Kempin/Getty Images
Jason Kempin/Getty Images
4
Rihanna, Kris Jenner and Kim Kardashian
The singer palled around with the Kardashian matriarch and Kim at the Inaugural Diamond Ball while rapper Big Sean looks on.
Getty Images
Getty Images
5
Taylor Kinney and Lady Gaga
The Chicago Fire actor accompanies his love of 3 years Lady Gaga to the Kennedy Center Honors in New York City.