Keeping all eyes on her, the former Friends star looked fab as she walked the red carpet at Arclight Hollywood Theatres in Los Angeles, showing off her tanned legs in a mini dress, fitted blazer and heels.
The 45-year-old was showing off shorter locks than usual (but as shiny as always!) and a gorgeous plum smoky eye.
Jennifer went to the premiere without fiancé Justin Theroux, although the couple were together earlier this week when Justin helped Jennifer complete her ALS ice bucket challenge.
Well, we say helped... He basically chucked a bucket of freezing water over her head as Jen pleaded with viewers to donate to the ALS Association, which raises funds for research into motor neurone disease.
Life of Crime is a black comedy about two criminals who kidnap a rich man's wife hoping to get a ransom payout, only to discover he's not that fussed that she's gone...
After attending the premiere, Jen hotfooted it over to Jimmy Kimmel Live, where she had a mini-Friends reunion with former co-stars Courteney Cox and Lisa Kudrow.
Watch a trailer for Life Of Crime below: