They later gushed over the news during a live taping of Dancing With the Stars.
Although she was pregnant, Holker stayed on the ABC series' season 21 to compete with her celebrity partner, Andy Grammer.
Holker is credited with a wide variety of work in film, television, and concert tours.
She is known from her appearances on the television dance competition So You Think You Can Dance, where she was a contestant in season 2 and an all-star in seasons 7-11, and 14.
t Witch: So she knew the interest was there on my part.
by Joe Toreno Allison: The whole rest of the season, I would be like, “Heyyyy,” and brush up against him. t Witch: In my defense, it was a dance rehearsal where of the girls in the piece had to hold my arms and move with me.
On television, she has been seen in various commercials and advanced to the Top 8 on the second season of So You Think You Can Dance, and danced in that season's SYTYCD nationwide tour.
“We had a really serious conversation about it and I explained to her everything that I have to do and asked if she thought I’d be okay,” Holker, who was last season’s runner-up with Riker Lynch, tells Us.
“She said, ‘Absolutely, your body is already used to you being this active.’ She was really confident about it and that made me feel so comfortable.” PHOTOS: Meet the cast of DWTS Season 21 One thing the dancer is a little nervous about? “Last week they put me in this little bitty leotard with all these cutouts! But I actually think I’ve filled out and have bigger breasts and hips now, and once it was on, I was like, ‘Oh! ’” PHOTOS: DWTS' sexiest costumes ever For more about Holker’s baby news, pick up the new issue of Us Weekly, on newsstands Wednesday.
Allison, who is paired up with pop singer Andy Grammer on season 21, made the announcement in between performances, alongside her husband and her 7-year-old daughter Weslie from a previous relationship. 6 Best Pregnancy Announcements of 2014 Despite the upcoming addition to their family, Allison will not be stepping out of the competition.
Allison said after the announcement, "I'm so about this for Andy.