The cast of 90210 gets into the party mode on the set on Thursday afternoon (September 27) at Manhattan Beach Studios in Manhattan Beach, Calif.

AnnaLynne McCord was joined by co-stars Trevor Donovan, Shenae Grimes, Tristan Wilds, Jessica Stroup, Jessica Lowndes, Michael Steger, and Matt Lanter.

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“Wow 100 episodes. Pretty crazy!” Matt tweeted.

Earlier in the day, the cast was seen filming a flag football scene and the guys were the cheer team!

10+ pictures inside of the 90210 cast… More Here! »

Matt Lanter gets his cheer on while filming scenes for 90210 on Wednesday afternoon (September 26) in Los Angeles.

The 29-year-old actor joined costars Shenae Grimes, Jessica Stroup, Jessica Lowndes and AnnaLynne McCord on set, who were dressed down for a game of flag football.

Denise Richards was also spotted on set, running over lines with AnnaLynne.

She’ll play Gwen, “a sexy West Beverly High School Alum turned wealthy socialite, and is the head of a very exclusive women’s club filled with powerful women. There is nothing Naomi (McCord) wouldn’t do to become a member of this club, until she realizes it’s really a grown up version of a Mean Girls clique from high school.”

90210 returns to the CW on October 8th. 10+ pics inside… More Here! »

AnnaLynne McCord and Shenae Grimes hit up the Softcup Beauty Retreat held at a private residence on Friday afternoon in Beverly Hills, Calif.

The 90210 co-stars got a chance to unwind and pamper themselves prior to the Emmy Awards while enjoying delicious bites, and indulging in various spa treatments.

During the retreat, AnnaLynne (who brought along her sisters) and Shenae both stopped off at the Effy Jewelry booth and snacked on Yoplait Greek Yogurt. Yum!

10+ pics inside of AnnaLynne McCord and Shenae Grimes… More Here! »

Shenae Grimes laces it up as she arrives at the 2012 Entertainment Weekly Pre-Emmy Party held at Fig & Olive Melrose Place on Friday night (September 21) in West Hollywood, Calif.

The 22-year-old actress wore a chic StyleStalker dress with vintage Valentino shoes for the party.

“Just left EW Emmy party with @Lorlor24 all dolled up and now headed to a total dive bar…like this… #embarrassing xx” Shenae tweeted after leaving. She’s pictured leaving Chateau Marmont later in the evening.

Earlier in the day, Shenae was spotted out at the Philips Zoom and US Weekly event held at The Grove. Together with celeb makeup artist Collier Strong, Shenae revealed award season red carpet look predictions.

20+ pics inside of Shenae Grimes… More Here! »

Mae Whitman gets a first look at the new Nintendo Wii U Experience in Los Angeles on Thursday night (September 20).

The 24-year-old actress joined Shenae Grimes, Rico Rodriguez, Keegan Allen, Chord Overstreet, Ariel Winter and more for the preview where they got to try out the new Wii U GamePad controller, and software titles such as Just Dance 4, Wii Fit U, Nintendo Land, and New Super Mario Bros. U.

Ariel Winter was seen belting out Carly Rae Jepsen‘s “Call Me Maybe” on SiNG party while Modern Family co-star Rico Rodriguez went straight for the Mario costumes.

Nintendo Wii U is out on November 18th. 10+ pics inside… More Here! »

Shenae Grimes watches the fashions on the runway as she attends the Tracy Reese Spring 2013 fashion show during 2012 Mercedes-Benz Fashion Week held at The Studio at Lincoln Center on Sunday afternoon (September 9) in New York City.

The 23-year-old actress sat next to Lauren Conrad in the front row.

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Shenae snuck backstage once again for the Tresemme Style Setters series. “Off to day two of my @Tresemme #StyleSettets coverage of #nyfw!! @tracyreese here we come! Xx” she wrote on Twitter.

She did the same thing at the Rebecca Minkoff show.

10+ pics inside of Shenae Grimes… More Here! »

Shenae Grimes checks out the newest collection from Rebecca Minkoff during 2012 Mercedes-Benz Fashion Week held at The Theatre Lincoln Center on Friday (September 7) in New York City.

The 23-year-old 90210 actress snuck backstage before the show to learn about the hair and makeup trends for the catwalk for Tresemme Style Setters.

PHOTOS: Check out the latest pics of Shenae Grimes

“Hello again NYC! Just landed for fashion week fun with #tresemmestylesetters again and immediately heading to the Lincoln Center madness! Xx” Shenae tweeted.

Over the weekend, Shenae and boyfriend Josh Beech took a tourist helicopter ride around the Big Apple.

20+ pics inside of Shenae Grimes… More Here! »