The Wild singer, 25, wore a revealing one-piece string top which rode up to give fans a cheeky flash at her gig in Liverpool on Saturday.
Jessie announced she was quitting as a judge on TV talent show The Voice earlier this month.
She gave up the role to focus on her music career and these shots show she’s giving it everything she’s got.
Jessie wore a sexy, white-netted top for the Radio City Live performance and she wasn’t afraid to let fans have an eyeful of her pants.
She even thrust out her rear to show off her pert bum.
And on her feet she kept it casual with a pair of white trainers to match her stylish one-piece.
The Echo arena crowd were treated to an eye-catching event as blonde-haired Jessie strutted her stuff on stage.
The singer, who quite The Voice after two series, previously dyed her hair blue, then purple as she continues to change her style.
Following her departure from the BBC show, she said: “I’ve absolutely loved my time on The Voice. I shall be keeping a very close eye on series three, showing my support in every way I can.”
The Script’s Danny O’Donoghue, a fellow Voice judge, also announced he would be leaving the BBC show.
Jesse has been performing all over the UK this summer and is lined up for gigs at V Festival on August 16-18, Norwich’s Sundown Festival on September 1 and London’s iTunes festival on September 23.