One of our favorite celebrity gossip targets/pin-ups/sex tape stars celebrates a birthday today.

Kim Kardashian turns 28.

And while she can't celebrate on the set of Dancing with the Stars (Kim got the boot from the show a few weeks ago), the former Playboy centerfold can at least enjoy the company of boyfriend Reggie Bush, who is out of action for the Saints with a knee injury.

In honor of the birthday gal, here's a photo tribute to Kim...