Pam Anderson celebrated her 40th birthday as any 40 year-old should - by surrounding themselves with much less attractive people. This picture is of Pam blowing out her birthday candles with the president of PETA. I couldn't imagine why you'd want to celebrate your birthday with the president of PETA, unless maybe you were really self-conscious and trying cover for the fact your birthday cake was made from baby seals. Or your underwear was made of chinchilla pelts. (BTW - awesome).

I guess technically only parts of Pam Anderson are really 40 years-old. I'm sure there's someway to figure out her average age by calculating the nipple differential, angle of the sun and then factor in Occam's razor - but complex physics never were my strong suit. Just stunning looks and a razor sharp wit.