Tarek and Heather Rae El Moussa are expecting their first baby together.

"It was a huge shock, We just weren't expecting this. We had just gone through IVF, says Heather. 

Tarek El Moussa is a real estate investor and television personality.

He is best known for co-hosting HGTV's Flip or Flop alongside his ex-wife Christina Haack.

The HGTV star and Selling Sunset realtor got a happy surprise as they were scheduled to transfer an embryo.

I really love being a bonus mom to Taylor and Brayden.

Tarek already shares kids Taylor, 11 and Brayden, 6, with ex Christina Hall.

Heather's sister is also pregnant and being pregnant at same time was a dream for their parent's, Heather said.

Currently, Tarek and Heather Rae El Moussa are doing the HGTV show.

Couple got the happy news in the middle of filming their new HGTV docu-series, The Flipping El Moussas.

My kids are my everything and having another one is just icing on the cake. I'm so excited," says Tarek.