Anna Faris hasn't said much about her first pregnancy, but she did reveal one fun detail during the Samsung Galaxy S III launch party in Beverly Hills June 21.

While chatting with her What's Your Number? costar Dave Annable, 32, and his wife, Odette, 27, Faris let it slip that she and Chris Pratt, 33, are expecting a baby boy this fall. "He's doing great!" Faris, 35, was overheard telling her celebrity pals. "We're growing everyday."

Faris proudly displayed her baby bump in a green jersey knit dress. Inside the event, The Dictator star mingled with fellow attendees Ashlee Simpson, 27, Marisa Tomei, 47, and Joe Manganiello, 35.

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This will be the first child for Faris and Pratt, who wed in Bali in July 2009. Long before Faris announced her pregnancy in May, the actress joked with Us Weekly that she "would love to have eight kids" with Pratt, who stars on NBC's Parks and Recreation. "We want to populate the world!"

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The couple, who met while shooting Take Me Home Tonight and have costarred together several times since, are always on the lookout for joint projects. "I just love working with him so much!" Faris told Us last year.

This article originally appeared on Anna Faris Shows Off Growing Baby Bump, Reveals Baby's Gender!