Billie Eilish on wearing a wig to cover up her blonde hair: 'I didn't want to look insane'

Billie Eilish appeared on “The Late Show With Stephen Colbert,” Monday, and instead of her trademark black and green locks she was sporting her new blonde bangs. The seven-time Grammy winner also confirmed that during her last appearance on the show in February, she wore a Halloween wig.

“I just knew that it would have these processing periods where it would look insane and I didn't want to look insane,” Eilish recalled. “But I needed something quick, so I literally ordered a Billie Eilish Halloween costume wig on Amazon.”

Eilish upgraded to a professionally made wig for the Grammys in March, which did not go unnoticed by eagle-eyed fans who thought something was different. As for the Amazon wig she wore on The Late Show, she admits it wasn't everything she wanted.

“It was awful, it was the ugliest thing I had ever seen,” Eilish said. “It was literally like a fully black wig, like this long, plastic, and the green was just like only here. Don't do that.”