Witney Carson revealed on Instagram that she's expecting her third child with husband Carson McAllister — and confirmed she's returning for "Dancing With the Stars" Season 35 anyway, making her the first pro to enter a season already knowing she's pregnant.

Carson, the reigning Mirrorball champion, will be roughly five months along when the season premieres September 15. She's paired with "Jimmy Kimmel Live!" personality Guillermo Rodriguez.

"I don't want to hide it," Carson told The Hollywood Reporter of dancing through her second trimester.