Forget about lip fillers and implants — the latest plastic surgery craze is all about achieving smaller lips.

Lip reduction surgery has recently become a popular procedure, particularly in Asian countries, where it is mainly practiced on patients in their 20s and 30s.

“The procedure involves surgically cutting at the wet-dry line and pulling the lip underneath inside the mouth to reduce overall size,” New York dermatologist Dr. Doris Day told NewBeauty.

Dr. Nuttae Nuttapon, a Thailand-based dermatologist, believes lip reduction has become popular in Asian countries because thin lips are associated with Western-style beauty.

“Asian men and women typically prefer Caucasian facial features, which are narrower cheekbones, deeper eye sockets and thinner lips,” he told the beauty site.