Beach Bikini Contest: Under 30s vs. Over 30s

Any zip code would be lucky to boast super-cute AnnaLynne McCord, 22. Click for<a href="http://www.radaronline.com/photos/image/14160/2009/07/bikini-bodies-under-30-and-over-30"> more photos on RadarOnline.com</a> of the “90210” star’s All-American physique, or read about <a href="http://www.radaronline.com/exclusives/2009/03/em90210ems-annalynne-mccord-wrecks-car">her recent fender bender</a>. (Photo: Pacific Coast News)

Talk about young at heart, 37-year-old Carmen Electra has definitely figured out how to stop the aging process. <a href="http://www.radaronline.com/photos/image/14220/2009/07/bikini-bodies-under-30-and-over-30">See more teeny bikini pics</a>, and check out this <a href="http://www.radaronline.com/exclusives/2009/07/video-carmen-electra-%E2%80%93topless-and-sexy-vegas">must-see video</a> of Carmen’s sultry dance performance at the Crazy Horse in Las Vegas. (Photo: Startraks)

Bubbly blonde Hayden Panettiere may only be 19, but she must go through a "heroic" workout for that bod. <a href="http://www.radaronline.com/photos/image/14215/2009/07/bikini-bodies-under-30-and-over-30">See more photos of her on RadarOnline.com</a> and <a href="http://www.radaronline.com/exclusives/2009/07/hayden-%E2%80%9Ci-didn%E2%80%99t-find-it-very-hard-being-naked%E2%80%9D">read about her first ever big screen nude scene</a> in “I Love You, Beth Cooper.” (Photo: Ramey)

Being a mom and maintaining an amazing body is no sweat for 38-year-old Denise Richards. <a href="http://www.radaronline.com/photos/image/14188/2009/07/bikini-bodies-under-30-and-over-30">See more shots on RadarOnline.com</a>, and <a href="http://www.radaronline.com/exclusives/2009/06/radar-exclusive-denise-richards-%E2%80%9Ci%E2%80%99m-no-kate-gosselin%E2%80%9D">read what she has to say about</a>  mom-of-the-moment Kate Gosselin. (Photo: Startraks)

Kristin Cavallari is the new star of “The Hills” at age 22, and she’s near the top of the list of hot Hollywood bikini bods, too. <a href="http://www.radaronline.com/photos/image/14183/2009/07/bikini-bodies-under-30-and-over-30">Go to RadarOnline.com to see more hot shots of Kristin.</a> And <a href="http://www.radaronline.com/exclusives/2009/07/three-way-style-war-eliza-dushku-vs-kristin-cavallari-vs-ciara">check out here how she ranks</a> fully dressed against other starlets. (Photo: Splash News)

Lisa Rinna is 46? Are you kidding? <a href="http://www.radaronline.com/photos/image/14165/2009/07/bikini-bodies-under-30-and-over-30">See more sexy shots of Rinna on RadarOnline.com.</a> And check out Lisa and other famous females who have <a href="http://www.radaronline.com/exclusives/2009/07/experts-pick-sexiest-actresses-who-have-posed-nude">fearlessly posed nude</a>. (Photo: Startraks)

Newly single Kim Kardashian, 28, will have no trouble bagging a new man with her amazing bikini body. <a href="http://www.radaronline.com/photos/image/14245/2009/07/bikini-bodies-under-30-and-over-30">Click to RadarOnline.com</a> for more pics, and check out her surprisingly <a href="http://www.radaronline.com/exclusives/2009/07/kim-kourtney-kardashian-shocking-then-now">different look in high school</a>.  (Photo: INF Daily)

Forty-five-year-old Courteney Cox Arquette should have no problem generating buzz for her new show “Cougar Town.” Check out <a href="http://www.radaronline.com/photos/image/14235/2009/07/bikini-bodies-under-30-and-over-30">more of these amazing shots on RadarOnline.com.</a> (Photo: INF Daily)

While she traipses around on “The City” in high fashion duds, 24-year-old Whitney Port also shines in beachwear. <a href="http://www.radaronline.com/photos/image/14226/2009/07/bikini-bodies-under-30-and-over-30">See more photos of her amazing bikini body on RadarOnline.com</a>. (Photo: Pacific Coast News)  

It’s obvious Eva Longoria Parker, 34, is far from “desperate” on holiday in Saint Tropez. <a href="http://www.radaronline.com/photos/image/14249/2009/07/bikini-bodies-under-30-and-over-30">RadarOnline.com has more bikini vacation photos of the star.</a> And don’t forget to check out hers and French husband Tony Parker’s <a href="http://www.radaronline.com/exclusives/2009/06/eva-longoria-and-tony-parker-live-good-life">frequent sunny treks</a>. (Photo: Bauer-Griffin)