The former Friends star looked gorgeous in a vintage John Galliano frock that flaunted plenty of cleavage on the red carpet!
She was also looking mega tanned thanks to her recent holiday to Cabo San Lucas in Mexico with fiancé Justin Theroux.
Justin was by Jen's side on the red carpet and throughout the night, and looked incredibly proud of his beautiful fiancée.
The 45-year-old was nominated at the SAG Awards in the 'Outstanding Performance by a Female Actor in a Leading Role' category for her role in drama Cake but lost out to Julianne Moor for Still Alice.
Jen's performance in Cake also scored her nominations at the Golden Globe Awards and Critics' Choice Awards but sadly she just missed out on an Academy Award nod.
Maybe next year, right?!
Cake is released in UK cinemas on 20 February.
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!