In celebration of Heather Locklear's 51st birthday, we've decided to visit the Urban Cougar archive for a look back at the sexiest older women found in film and pop culture. Most of these women walk the thin line between aging starlet and hot has-been, but we don't really care what you call 'em because these ladies are still fly as hell. Hit the thumbs for a look at some of our favorite shots from Urban Cougar's Tumblr page. 

[via UrbanCougar]