After having the best Golden Globes night ever [1] and receiving her third Oscar nomination, Jennifer Lawrence [2] was back among Hollywood pals at the SAG Awards in LA on Saturday. She wore a stunning Dior dress and was her usually bubbly, charming self, kissing director David O. Russell on the red carpet and having fun with everyone from Lupita Nyong'o to American Hustle costar Elisabeth Rohm. Jennifer and Elisabeth got playful with their trophies after the cast won the award for outstanding performance by a cast in a motion picture. Jennifer was nominated for the outstanding supporting actress award this evening but lost out to Lupita for the second time — the 12 Years a Slave star took home the honor at the Critics' Choice Awards on Thursday, too. Keep reading for more pictures of Jennifer's night at the SAGs, and don't forget to vote for her look in our fashion and beauty polls [3]!

Jennifer looked excited to meet Lupita Nyong'o.

Jennifer hugged Matthew McConaughey [4] after presenting him with his award for outstanding performance by a male actor in a leading role.

Cuba Gooding Jr. introduced Jennifer on the red carpet.

Jen caught up with Harvey Weinstein.

Jennifer kissed David O. Russell.

Jennifer and Lupita Nyong'o posed for the perfect picture.

Bradley Cooper [5] reached out for Jennifer in the audience.

Jennifer cozied up to Cuba.