Brooklyn Decker and Andy Roddick will soon being turning from a twosome to a trio. The couple is expecting their first child in the fall.

“I’m happy to confirm Brooklyn and Andy are expecting a new addition to their family in the autumn of this year,” Jesse Parker Stowell, Brooklyn's rep, told People.

The model and actress, who is playing a mom on the new Netflix series Grace and Frankie, shared the news with an adorable photo on Instagram. “So this happened… #the3ofus,” Brooklyn wrote in the caption of the pic.

Brooklyn is ecstatic about being a mom and has openly expressed wanting to start a family with her hubby of six years, Andy. And we know this child is going to have one amazing set of genes.

“I love kids. I definitely want kids,” she told People last spring. “I just have to figure out the timing of that.”

As for Andy? We're sure he's just as excited and retweeted his wife's announcement on Twitter.

And it looks like Brooklyn and the retired tennis player have had some practice with their two furry kids -- their bulldogs, Billie Jean King and Bob Costas. With tennis-centric names like that, we can only wonder what their planning on naming their soon-to-be bundle of joy.

Despite the new baby new, the couple is gearing up for a busy month. Brooklyn's new show, Grace and Frankie, will premiere on May 8, and she was looking stunning on the red carpet during the premiere of the show last week. Meanwhile Andy, who is now a host on Fox Sports 1, will be throwing his annual Andy Roddick Foundation Gala tomorrow (May 4).

Congratulations to Brooklyn and Andy!

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