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As she lied in front of the mirror, the hot singer flaunted her stunning body.
Jessie performed a two-hour acoustic set, her first since 2013, at the famous Troubadour music venue.
She's not ashamed to show off her body - in fact, she knows that by doing so she will only continue to generate more buzz for herself.
Born and raised in London, she began her career on stage, aged 11, with a role in the West End musical Whistle Down the Wind.
You've come to the right place! The musician split from her on-off beau Channing Tatum, 40, in October after a two-year, on-off romance.