Gwen Stefani is constantly changing up her hair style, even going from blond to back and back. But does that equal wearing wigs and hair extensions?

Gwen Stefani and Blake Shelton ... In the cheeky video, Stefani revealed her smiling face from behind a white lace veil. Stefani's dress wasn't in the shot. Instead, she wore a white silk robe ...

Gwen Stefani and Blake Shelton are stepping out ... The No Doubt singer, meanwhile, wore a glamorous, long-sleeve silver mini-dress, featuring tons of tiny crystals and a lace underlay.

Gwen Stefani is giving fans a sneak ... In what appears to be a shoot from the video for the song, Stefani is glammed out in ...