Edyta Sliwinska

Former Dancing with the Stars pros Edyta Sliwinska and Alec Mazo are expecting their first child.

"There it is, my little secret. Less than 2lbs little," Sliwinska tweeted Thursday, along with a photo showing off her baby bump.

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Sliwinska, 32, competed on 10 seasons of Dancing, while Mazo, 35, appeared on five, including the inaugural season, which he won with Kelly Monaco.

The couple wed in 2007.