The "What Was I Made For?" singer said that her green and black hairstyle felt like her 'career-defining look' ...

"Happier Than Ever" is the title track from Eilish's sophomore album, which debuted at No. 1 on the Billboard 200.

The Grammy winner debuted her black hair on Instagram Tuesday ahead of starting her Happier Than Ever, The World Tour ... Hollywood Life and Oscar.com. Billie Eilish is going back to black!

Billie Eilish has had ... Another track off of Happier Than Ever, “NDA” spent 39 weeks on Billboard’s Hot 100. The track is based off of Eilish’s experiences with fame and lack of privacy.

By Shirley Halperin, Ethan Millman Billie ... as well. “Happier Than Ever” and “Birds of a Feather” were both nominated for record and song of the year as well. Overall, Eilish has nine ...