The former Voice judge, 25, wowed the crowd in Hylands Park, Essex, on Saturday night (17 August) in a black and white bralet and pants.
Jessie's getup was predominantly black with white crisscross stripe detailing and it coordinated with her blonde crop perfectly!
Following the performance - and having watched Beyoncé, she headed up to the event's Staffordshire leg ready for another performance at Weston Park last night.
Mixing it up a little, she then swapped her outfit for an identical one - but with the opposite monochrome pattern!
It appears Jessie had a great weekend. Not only did she watch Beyoncé, Jessie also caught up backstage with her fellow former Voice judge Danny O'Donoghue.
Sharing a collage of pictures of them together, Jessie later tweeted: "Chilling with Danny before the show yesterday at Chelmsford #vfest sooo nice to see you Dan x"
Check out all the pictures from Virgin Media's V Festival in our gallery!
Copyright: Rex Features AKEM