Pam Turns 40, Breasts Still Underage!

6/13/2007 2:04 PM PDT BY TMZ STAFF
With the big 4-0 just two weeks away, Pamela Anderson started the festivities early when PETA threw her a boobieful birthday bash in Fort Lauderdale on Tuesday. Look at those puppies!

America's favorite middle-aged Canadian blonde bombshell can still rock a nipple-icious off-the-shoulder boulder-holder gown -- and her breasteses don't look a day over 18! Hmmm, wonder what her secret is?!