Yikes! Check Out John Travolta's Thinning Hairline!

Credit: GSI Media; Kevin Winter/Getty Images for COS

Hair raising!

John Travolta was photographed with a receding hair line last week in Beverly Hills.

PHOTOS: See celebs' wackiest hair styles

Magically two days later, the actor, 56, sported much fuller locks at a Church of Scientology Celebrity Gala on Sunday.

PHOTOS: More hot star hairstyles

The UK Mail Online speculates he may be wearing a weave. See the best men's hairstyles!

Travolta has reason to want to look younger.

His wife, Kelly Preston, 47, announced earlier this year that she's expecting their third child. They are also parents to Ella Blue, 10, and the late Jett, who died from a seizure at age 16 in 2009.