Evangeline Lilly feted the upcoming release of her new movie, Ant-Man, last night, revealing that she's also preparing to celebrate another debut: her second baby. Lilly's pregnancy was on full display at the Ant-Man premiere, where she wore a black and white dress. On Instagram, the actress wrote: "So proud of this movie! #Antman #proudmama." Lilly spoke about her pregnancy in an appearance on Conan, explaining that she's seven months along. As for whether she and her partner, Norman Kali, are expecting a boy or a girl, Lilly told O'Brien: "It's a surprise. We don't know this time. We didn't know last time." This is Kali and Lilly's second child; their first, Kahekili, is 4. In the Marvel movie, Lilly plays Hope Van Dyne, daughter of Michael Douglas' Hank Pym, the original Ant-Man. The movie opens nationwide July 17. Watch the video below to hear what Lilly had to say on the red carpet.