Maggie Gyllenhaal, 33, arrived in floor-length white lace Thursday at the Toronto Film Festival premiere of her new film Hysteria, a romantic comedy about the invention of the first electronic vibrator. Accessorized with little more than bright red lips, Gyllenhaal joined director Tanya Wexler and co-stars Hugh Dancy and Jonathan Pryce to build buzz around the film and the importance of its racy subject matter.

Gyllenhaal, who is married to actor Peter Sarsgaard and has a daughter, Ramona, 4, said that while the film takes a humorous approach to the 1880s plot of scientific experimentation and invention, the subject matter is seriously worth seeing on the big screen. "It's about vibrators and women's orgasms, and I don't think people really do talk about it very much, and I do think it does still make us flushed and uncomfortable," Gyllenhaal said.

Watch the trailer here: