TMZ has learned the 26-year-old long-haired wannabe's mane is actually a wig and it's got "Idol" staffers flipping out.
Sources tell us Robbie never talks about his matted down piece and that makes production members feel like it's the blonde elephant in the room. It seems Simon was right last night -- Robbie is a fake! - more on this story
Preview and Purchase American Idol CDs
On the Blue: New Horizons Cruise Day 1: Marbin Gets the Fun Started
Hot In The City: Prog Band Tu-Ner Coming to Phoenix
Sites and Sounds: Daytona Beach Ready to Rumble with Welcome to Rockville
Watch The Beach Boys Official Documentary Trailer
Ringo & His All Starr Band Announce Fall Tour
The Night Flight Orchestra Inks Deal With Napalm Records
Little Feat 'Can't Be Satisfied' With New Video
The Melvins Stream 'The Making of Tarantula Heart' Mini-Documentary
Watch Babylon A.D.'s 'Wrecking Machine' Video
The Exies Reveal Never Before Seen Footage With 'For What It's Worth' Video
The Allman Brothers Band Legend Dickey Betts Dead At 80