When "Dancing with the Stars" released its official line-up for the show's 21st season, fans immediately noticed that one familiar face appears to be missing, that of professional ballroom dancer, Kym Johnson. Her exclusion from the show immediately started the rumor mills turning, with some speculating that her decision to sit out the season was due to the fact that she's pregnant.

According to reports, the 39-year-old Johnson did not return for the latest season of the popular dancing show because she's pregnant with businessman, Robert Herjavec's baby.

Rumors of a romance brewing between the two started when they were paired together in last season's "Dancing with the Stars." They were eliminated after a few weeks but had since been keeping each other company.

The two previously claimed that they were just friends but Johnson finally revealed last month that the "Shark Tank" star was her boyfriend.

The leggy dancer was a recent guest on "The Morning Show" where she talked about being one of the judges in the Australian version of "Dancing with the Stars." When hosts Kylie Gillies and Todd McKenney asked her point blank if the 52-year-old mogul was her boyfriend, she answered in the affirmative and described him as "lovely" and "great."

"He'll be at the first show watching and it's really lovely to have him here," she said.

While speculation that Johnson passed on "Dancing with the Stars" to be a judge on the show's Australian version is understandable, Herjavec fueled the pregnancy rumors with his constant presence and attentiveness to his former dance partner.

If congratulations are indeed in order, the baby will be Johnson's first and Herjavec's fourth. He has three children that he shares with his ex-wife Diane Plese.

"Dancing with the Stars" has an interesting mix of celebrities that are onboard for season 21, including polarizing chef, Paula Deen, conservationist, Bindi Irwin, Backstreet Boy, Nick Carter, singer, Chaka Khan, reality stars, Kim Zolciak and Tamar Braxton and actor, Gary Busey.

Bruno Tonioli, Carrie Ann Inaba and Julianne Hough will be back as judges while guest judges will be taking over Len Goodman's seat.

"Dancing with the Stars" season 21 is set to sashay back on air on Sept. 14, 2015.