2. SUSAN SARANDON

It comes as a surprise that Susan Sarandon is 64, considering that she still has the same figure today that she had in the cult classic Rocky Horror Picture Show, in which she ran around in her underpants for a good hour, 36 years ago. Also surprising, we weren't at all disgusted when Justin Timberlake and Andy Samberg sang about mother-loving on the Mother's Day episode of SNL with her playing their muse. Every Mother's Day needs a mother's night.