After appearing on Good Morning America today, Debbie Gibson and Tiffany launch their Journey Through The ‘80s tour tonight in Westbury, N.Y. (I can’t wait – and I can’t wait to see if mega-Tiffany fan Bethenny Frankel will be on hand, too.)

When the former teen queens performed together at a club show earlier this year, Debbie rocked midriff-baring tops quite impressively, and she did the same today in the concert appearance.

She shares her secret to maintaining a taut tummy.  

“My abs are all about what I eat and what I don’t eat,” she tells me. “For instance, I woke up in the middle of the night last night with a mini-bar Peanut M&M craving. I had two of them. In the past, I would’ve had the whole bag and more. I’m just into taking care of myself and being healthy. I try to save my indulgences for special occasions. It’s very much about the eating for me – and a little working out. “

Here’s my pic with Tiffany and Debbie Gibson:

Tiffany, Valerie Nome, Debbie Gibson

Catch Debbie Gibson and Tiffany on their Journey Through The ‘80s tour, which makes stops across the U.S. in July and August. Whoop, whoop!