Melissa Joan Hart and family Credit: Twitter

It's the best birthday present a woman could wish for!

Melissa Joan Hart turns 36 on Wednesday and this year she'll have something extra special to celebrate: The Melissa & Joey actress is expecting her third child.

"(Early) Happy Birthday to me! And baby makes 3!" Hart tweeted Tuesday, along with a photo of her growing baby bump.

The star's new arrival will join big brothers Mason, 6, and Braydon, 4, Hart's children with her husband of nine years, musician Mark Wilkerson, 35.

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With two young sons at home, and a starring role on her ABC Family show (whose second season premieres May 30 at 8 PM), Hart is extra busy these days.

Still, "Since I was little, I knew that I wanted to have children," Hart -- the oldest of eight siblings -- told "Having a big family has always been very important to me, and I would hate for my kids to not be able to experience that."