Sounds like dating stylish co-star Blake Lively has turned Gossip Girl’s Penn Badgley into an expert on ladies clothing. The Stepfather heartthrob is sharing his thoughts on fall’s hottest looks with Cosmo.com.

“What a woman wears says a whole lot about her confidence,” Penn explains, adding that sweater dresses and V-necks are amongst his favorite items to see on any woman. “A sweaterdress really can be the sexiest thing. As a man, I just like the simpler things.”

Other fashionable quotables from Penn include: “Clothing that looks good on a woman — doesn’t matter what it is — makes you think about sex….”

“A bold accent can fade away, leaving you focused on the beautiful woman wearing it…..”