Credit: Twitter

Kelly Osbourne really, really loves her new pal Miley Cyrus!

A day after angrily defending her So Undercover costar against "the haters," Osbourne, 26, dressed up as Cyrus, 18.

In a TwitPic posted late Wednesday, Osbourne donned a wig matching Cyrus flowing brown-and-blond locks; the real Cyrus (wearing short-shorts and a t-shirt) stood as both young women made the peace sign.

"I'm just being Miley!" Osbourne's caption read.

On Tuesday, Osbourne lashed out at Cyrus' harshest critics, who lambasted the Disney star for a recent bong-smoking video and other antics.

"Miley and I have become really close," Osbourne wrote. "I'm sick of all the haters judging her...This really makes me mad. Miley is one of the most hard working respectful women I have ever worked with, I am learning a lot from her!"