Britney Spears' 'Work Bitch' debuts after leak

Britney Spears was forced to debut her new single a day early after it leaked online Sunday.

Work Bitch was expected to premiere on Monday night -- Spears had teased fans about the release of the single for weeks via a countdown clock on her website -- but on Sunday morning a low-quality version of the song appeared online. In response to the leak, Spears' camp moved up the radio debut for the official cut to 3 p.m. ET.

The pop star took to Twitter to express her dismay:

Listen to the new single here: