A drop-dead gorgeous or scorchingly hot woman who looks like she could have stepped right out of a classic Hollywood film or a vintage pin-up. She can be classy, suggesting someone like Lauren Bacall or Audrey Hepburn or (the young!) Katherine Hepburn, or a sexbomb, like Bettie Page or Jayne Mansfield Pamela Green or Sophia Loren. Her vintage beauty and/or sexiness can be that of any period from the 1920s to the mid-60s. Hippie chicks do NOT count, nor do women whose looks, however attractive, suggest a 70s roller disco queen or an 80s music video.
Director Tim Burton's ex-girlfriend Lisa Marie (the actress, NOT Elvis's daughter) was a real retro babe when she played Vampira in ED WOOD. So was Jennifer Connelly back before she got too skinny. Anna Nicole Smith was almost a retro babe, back before she porked out and the media revealed what her intelligence and personality were like.
Adjective applied to an attractive and exceptionally buxom punk rock girl.
"That Angela is one punk-rack-ular goddess," said Sam as he gazed longingly at the mohawked beauty in the mosh pit.