08/04/2011 at 02:00 PM EDT
He's looking leaner
these days – thanks to the quality time Channing Tatum
is logging in with his personal trainer. The actor hit up Fitness Factory in West Hollywood for a serious workout – where he lifted at least 200 lbs. of weights. The actor seemed "really jovial and happy" as he laughed and cracked jokes with his trainer during his 90-minute session.
Newly single Kate Bosworth
and director Michael Polish
shared an affectionate night
at the Coldplay concert, sponsored by Samsung, at the Los Angeles Tennis Center at UCLA. The two giggled together as Polish wrapped an arm around Bosworth's waist and kissed her on the cheek. They also snuck in even more kisses during the show and looked "totally adorable" together, an onlooker says. Meanwhile, lead singer Chris Martin
's wife Gwyneth Paltrow
stayed under the radar, hanging backstage during the concert.
shared an early dinner with a male pal at West Hollywood's Chateau Marmont
, and she looked calm and confident as she sipped on red wine with her meal.
Emmy nominee Amy Poehler
stocked up on brightly colored T-shirts, tank-tops and pants at Splendid on L.A.'s Robertson Boulevard. The Parks & Recreation
star was cracking jokes as she shopped and made the staff laugh a lot.
By JENNIFER GARCIA and JESSICA WEDEMEYER