4/11
Jason Kempin/Getty Images for Time Inc
Maybe Tyler's mom, Bebe Buell, really ought be on this list: she famously married Todd Rundgren, Coyote Shivers and Jim Wallerstein and had relationships with Steven Tyler (Liv's dad) and Elvis Costello, among many others. Her daughter isn't exactly following in mom's stiletto-steps (it's a different era, after all), but she was married to, and had a son with, bassist/vocalist Royston Langdon of the British band Spacehog. Oh yeah, and she's hot.