Heather Rae El Moussa and Christina Haack in a sizzling bikini photo shoot - See the pics!

Heather Rae El Moussa and Christina Haack stripped down to their string bikinis to support Heather's new business venture.

Heather called upon Christina for a super sexy lip gloss campaign that you must see for yourself!

The HGTV star, 37, posted an Instagram video with Christina in matching black and white bikinis to show off her new lip gloss, Perfect Pink by Heather Rae Essentials.

“She’s here. She’s pink. She’s perfect. [] The color Heather dreamed of” the IG caption reads as the video plays of the two blonde bombshells posing in their pink heart-shaped sunglasses in a beautiful backyard.

She also posted the pair in matching skimpy, hot pink string bikinis sitting by the pool, and applied the previously mentioned lip gloss.

In case you didn’t know, Heather is married to Christina’s ex-husband, Tarek El Moussa, and the two women have been working on their friendship.

Seems like everything is peachy over here!