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Debbie Gibson, Tiffany Concert Tour Sparks New Interest in '80s 'Rivalry' (Video)

Tiffany and Deborah Gibson
Theo Wargo/Getty Images
Tiffany, left, and Deborah Gibson

The duo kick off performances for their joint summer engagement in Westbury, N.H., on Friday.

As any child of the '80s knows, there once was a time when you couldn't pick up an issue of Tiger Beat without reading about the rivalry between then-teen pop stars Debbie Gibson and Tiffany.

But was it real? Nope, say the two singers, who are teaming up for a tour kicking off Friday night in Westbury, N.H.

"It's been mutual admiration, always," Gibson (who now goes by Deborah) told USA Today.

STORY: Debbie Gibson, Tiffany to battle in Syfy movie

In fact, Gibson used to listen to Tiffany's first big hit, 1987's cover of "I Think We're Alone Now," "every time I was on a plane, during takeoff, because it's so driving. My sister and I had a Walkman, and we each had headphones, and we'd listen together."

Meanwhile, Tiffany said that one of her "favorite songs" is Gibson's 1988 hit "Lost in Your Eyes."

In fact, this tour isn't the first time the two have teamed up. They starred in the Syfy horror film Mega Python vs. Gatoroid earlier this year.

VIDEO: The Tiffany vs. Debbie Gibson Catfight

"I thought it would be something our fans would love," Tiffany said of the telefilm. "But people had really always expected us to do something musically."

Gibson and Tiffany's tour, dubbed Journey Through the '80s, including stops in six cities, ending Aug. 13 in Chicago. The two, who will perform together and individually, will sing their own hits as well covers of songs from the likes of Michael Jackson and Madonna and even Broadway show tunes.

"[It's] unashamedly about the '80s," Gibson said.