January 30, 2013 01:00 PM

Courtesy Monty Brinton/CBS

Behind door number one — a pregnant Tiffany Coyne!

The Let’s Make a Deal model, 30, and her husband Chris are expecting a baby, her rep tells PEOPLE exclusively.

“I’m extremely excited with my husband Chris to be having our first child,” Coyne, who is 3½ months along, says.

A staple on the show since her debut in 2010 — Coyne cues the opening of the doors — the mom-to-be’s announcement couldn’t come at a better time.

“This has been a truly memorable year on the show celebrating our 50th anniversary, and soon my family will be adding to that celebration. I couldn’t be happier now,” she tells PEOPLE.

— Anya Leon

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