Today is Heidi Montag's birthday. The cute Colorado girl turned Hollywood fame whore and walking testament to bad plastic surgery is now 23 (going on 45).

As a celebrity gossip site, we reserve the right to taser ridicule Horse Face Heidi constantly, because she and husband Spencer Pratt are uniquely deserving.

But we also must pay tribute to the entertainment she's provided over the years. So without delay, here's a 23-photo tribute to birthday girl Heidi Montag: