Selma Blair vence film festival photocall red carpet

Selma Blair looked stunning on the red carpet at The Venice Film Festival on Sunday ... especially considering the 39-year-old gave birth only a little more than a month ago! Wow!

The actress was on hand to promote her new movie, the well-reviewed comedy Dark Horse. She plays the love interest in the pic, which co-stars Christopher Walken and Mia Farrow.

She's a mom who's workin' and workin' it!