Nineties teen heart throbs get hair transplants, too. Backstreet Boy AJ McLean posted before and after photos of his new hair transplant on Instagram.

"Some girls get there [sic] boobs done some guys get abb implants all to make them happy! This was the one thing I did and I couldn't be happier thank u dr G!!!!" he posted last month.

Through the years McLean, 35, and his band mates have sported crazy do's from spiky blond locks to long and curly.

"It looks like they did a wonderful job for him. It looks nice and natural. He should be very happy with his result," said hair transplant surgeon Dr. Brett Bolton.

(Image credit: @skulleerox/Instagram)

Hair transplants are much more natural today than they were in the past.

"In the past, hair transplants were definitely very detectable. Now we move one hair at a time, so it's completely natural," said Bolton.

In November, McLean and his wife, Rochelle Karidis, had a baby girl named Ava. Ava and Karidis are depicted in many of the images on McLean's Instagram account.

The "Quit Playing Games (With My Heart)" crooner is set to kickoff a tour with the band on April 20.