As plenty of stars bonded with their families  at home over Mother's Day  weekend, others have been out on the town with loved ones, pals, and costars. On Saturday, Jennifer Lawrence  struck up a smiley conversation with actor Omar Sy after the star-studded premiere  of X-Men: Days of Future Past in NYC, and Christina  Aguilera showed off her baby bump and moves at a concert in LA. To kick off the weekend on Friday, Miranda Kerr  hit a high note on the runway in Shanghai, China, and Jimmy Fallon  donned his Ragtime Gals costume yet again to perform at a famous friend's birthday celebration in NYC. That's just where the fun starts — keep reading to see this weekend's must-see snaps!
Hanging With Mom
Kellan Lutz  spent quality time with his mom, Karla Pope, at an Anti-Defamation League event in LA on Thursday.
Miranda Kerr  worked the runway at Michael Kors 's "Jet Set Experience" fashion show in Shanghai, China, on Friday.
Rita Ora performed a striptease during her set at G-A-Y in London on Saturday.
The Lawrence Laugh
On Saturday, Jennifer Lawrence  got chatty at the afterparty for the X-Men: Days of Future Past premiere in NYC, where she led the star parade on the red carpet.
Dressed to the Nines
Lauren Parsekian and Aaron Paul attended the Open Hearts Foundation Gala in Malibu, CA, on Saturday.
Christina  Aguilera's baby bump was front and center when she performed at 102.7 KIIS FM's Wango Tango concert in LA on Saturday.
Alessandra Ambrosio's tan was on display when she stopped at the Brentwood Country Mart in LA on Sunday.
Jimmy Fallon  and his Ragtime Gals performed a song at Billy Joel's 65th birthday at Madison Square Garden in NYC on Friday.
Rachel Zoe  and Rodger Berman went shopping together in LA on Saturday.
On Saturday, Shakira  lost herself in the music at 102.7 KIIS FM's 2014 Wango Tango concert in LA.
Evan Rachel Wood gave it her all while singing at the Evening With Women event in Beverly Hills on Saturday. The annual party raised money for the LA Gay & Lesbian Center.
All Riled Up
Bruce Willis  and Halle Berry  brought their winning spirit to the 21st annual EIF Revlon  Run/Walk For Women event in LA on Saturday.
Lea Michele  smiled and laughed her way through an afternoon with her parents, Marc and Edith Sarfati, in LA on Friday.
Red Carpet Pals
Heather Graham  and Mark Wahlberg  buddied up on the red carpet at A+E's network upfront event in NYC on Thursday.
Jon Hamm  and Jennifer Westfeldt got a kick out of seeing his wax figure at Madame Tussauds in NYC on Friday. Check out more stars next to their wax figures !
Shia LaBeouf  turned his Friday in LA into the gun show.
Back in Action
Mere days after Hugh Jackman was treated for skin cancer on his nose , the actor signed his autograph for a fan outside an event for X-Men: Days of Future Past in NYC on Saturday.
Suki Waterhouse donned palazzo pants for her Friday in NYC.
Joshua Bowman and Emily VanCamp stepped out in LA during their break from filming their ABC show, Revenge, which was renewed this week .
Rihanna  brought a pal to the Clippers vs. Thunder game in LA on Friday.
Ellen DeGeneres  showed off her pearly whites while out in LA on Friday.
Dakota Johnson  was covered up while running errands in NYC on Friday.
Back in Black
On Friday, Taylor Swift  looked flawless while leaving a gym in NYC.
Diane Kruger  scored some exercise while filming scenes for FX's The Bridge in LA on Thursday.