Heather Dubrow Shows off the Results of the Dubrow Diet in a Teeny Bikini

The Real Housewives of Orange County alum Heather Dubrow and husband Terry Dubrow have been super busy promoting their new book The Dubrow Diet, but not this week: The Dubrow family is on vacation in paradise, judging from Heather's Instagram. We bet she's celebrating the fact that the hotly anticipated book hit a major milestone on Amazon. She's hanging on the beach in a classic black bikini, and Heather is literally a walking advertisement for "interval eating" as detailed in The Dubrow Diet.

"We've been living like this for at least three years," Heather told The Feast recently.  "Terry just turned 60; I'm going to be 50 in January. People see pictures of us and ask, 'How do you have these ageless bodies'? And this is how; it's the way we eat; it's the way we exercise, and we put it all down in The Dubrow Diet."

Talk about killer abs! Heather just shared on Watch What Happens Live with Andy Cohen that even though she's married to a plastic surgeon, she's yet to go under the knife — although she does swear by a tiny bit of Botox.