'Unforgettable's' Daya Vaidya expecting twins

In a new interview, "Unforgettable" star Daya Vaidya says she and husband Don Wallace are expecting identical twin boys this summer.

"Even when my doctor saw only one baby in our first ultrasound, my husband said he strangely felt there were two babies," says Vaidya in the Life & Style interview. "When they finally saw the second baby at three months, my jaw dropped to the floor, and my husband said with a huge smile, 'I told you so!'"

The couple already has a three-year-old daughter, Leela. Though Vaidya admits carrying twins is a little bit different.

"I literally hiked mountains during my ninth month [with Leela]," she says. "With twins, it's like walking around with a boulder in my belly and a belt around my lungs. I can barely walk two blocks, and I'm only in my fifth month!"