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It’s off the mats and cameras rolling for Fierce Five teammates McKayla Maroney and Gabby Douglas. The Olympic gold medal gymnasts are taking a break from the vault and the uneven bars to film guest spots on two of the CW’s hottest dramas. While Maroney will join the Bluebell cast on Hart of Dixie, Douglas visited The Vampire Diaries‘ Nina Dobrev and her costar/real-life boyfriend Ian Somerhalder on the Mystic Falls set earlier this week. And its mutual admiration between the actors and the athlete. After shooting wrapped, Dobrev tweeted: “Thanks for coming @gabrielledoug , I hope you had fun—you were great ! Smile is even brighter in person… : )” We think it’s an all-around brilliant match! Further proof that the CW really loves its olympians? Gold-medal swimmer Ryan Lochte will play himself in an upcoming episode of 90210. No word yet on whether his wardrobe involves a Speedo… Hart of Dixie returns on Tuesday, October 2, at 8 p.m. EST, and The Vampire Diaries kicks off season 4 on Thursday, October 11, at 8 p.m. EST.

Plus, click through the gallery to see how America’s sweethearts dress outside the gym!

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Did your mouth drop when you saw the cast of Beverly Hills, 90210 back on TV? Old Navy recruited Jennie Garth, Luke Perry, Jason Priestley, and Gabrielle Carteris from the original ’90s show for its new fall campaign, giving anyone who loved the hit a little thrill every time it comes on the air. And the cast sure grew up from when the show started in 1990! Click through the gallery to see the all of 90210′s leading stars then and now.

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Armani Exchange has named 90210 actress AnnaLynne McCord to be its very first “stylebrity,” according to PeopleStyleWatch.com. What exactly is the difference between a plain ol’ celebrity and a stylebrity, you might ask? Well in this case, it means McCord will offer holiday gift tips to suit tastes ranging from prepster to bad girl. Plus, the fashionable star has also styled ten cute outfits for the brand’s holiday collection. Get her tips and shop her looks at ArmaniExchange.com starting November 1st.

Happy 90210 Day! The totally made-up holiday (Today’s date is September 2nd, 2010 – 9-02-10. Get it?), has those of us who are old enough remembering some of our favorite moments from the original ‘90s teen drama, Beverly Hills 90210. As we looked at photos from the series, our nostalgia gave way to a few, “I can’t believe I wore that!” fashion flashbacks. Oh, the baby-doll dresses, scrunchies and high-waisted jeans! Click through our gallery to see Brenda, Brandon and the gang and tell us which questionable trends you rocked back in the day. Donna Martin graduates!

Check what the new cast of 90210 has to say about ’90s fashion trends.