Find Out the Gender of Neil Patrick Harris' Twins!

Celebrity Moms Aug. 16, 2010 AT 2:12PM
Find Out the Gender of Neil Patrick Harris' Twins! Credit: Stefanie Keenan/

It's a boy -- and a girl!

When first-time parents Neil Patrick Harris and his longtime partner David Burtka welcome twins via surrogate this fall, the newborns will be a son and a daughter, an insider confirms to

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While mum on the twins' gender, the How I Met Your Mother star, 37, Tweeted over the weekend that he and chef/actor were expecting. "We're super excited/nervous./thrilled," Harris wrote.

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Also first-time parents, Harris' HIMYM costars Alyson Hannigan and Cobie Smulders both welcomed daughters in spring 2009.

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