She chose a gorgeous pink, button-up dress for her friend Amy Schumer's nuptials to chef Chris Fischer on Tuesday.
But it turns out Jennifer Lawrence is such a fan of the Philosophy frock, she's worn it before.
The Hunger Games beauty previously donned the pretty pink number for the The Hollywood Reporter's annual Power 100 breakfast in December.
Jennifer, 27, wore the dress to receive her Sherry Lansing Leadership Award two months ago, teaming the midi with simple black pumps and a chic up-do.
For her pal Amy's Malibu wedding the style icon tried a more relaxed vibe, pairing the versatile dress with peep-toe shoe-boots and adding a choker and silver statement necklace.
Jennifer also had an accidental style tweak when the buttons of the dress came undone.
She told Entertainment Tonight two days after the wedding: 'Notice my shirt was accidentally undone the whole time. In every wedding photo, all of my buttons were undone.'
Jennifer, who revealed the wedding had a 'beachy' vibe, added: 'It looks like I was like, "Oh, you thought this was going to be about you?"'
The actress also gushed in her chat with ET that Amy's groom Chris wrote his own vows: 'It was beautiful. It was very sudden...I was sobbing. His vows were stunning,' she revealed.
Jennifer told ET: 'It's when two people really love each other and they really mean it, it shows, and it was a beautiful ceremony and an amazing time. I couldn't be happier for them.'
Jennifer said that some guests at the wedding wanted to walk on the beach, but she told them: 'No. I don't get the beach. I just don't care.'
The actress let loose at the reception as she danced and enjoyed a beverage in her pleated pink dress.
The Hunger Games star was captured in the middle of a dance move for one photo shared by Amy to her Instagram account.
Another shot shared by the bride showed Jennifer planting a kiss on her cheek.
Amy looked at the camera as Jennifer gave her a smooch on her forehead; the duo posed in front of an incredible view of the ocean.
Meanwhile, Amy, 36, was a vision in her low-cut floral white wedding dress.
She married Chris, a farmer-turned-chef who she's been dating for just a few months.
The wedding took place at a rented home in Malibu in front of 80 people, including Jennifer, David Spade, Jennifer Aniston, Jake Gyllenhaal, Larry David and Judd Apatow.
This article has been adapted from its original source.