The 'Bang Bang' singer showed off her talons while performing on Monday night (22 September) as part of the iTunes Festival at The Roundhouse in Camden, London.
And, frankly, we rather fancy copying her look...
Wearing high-waisted black pants with a sheer polka dot top and patent high-heeled boots, Jessie looked as fabulous as ever – and we love how her manicure worked perfectly with the rest of her outfit.
The sheer colour on her nails reflected the nude tights on her amazing legs, while the black tips complemented her all-black outfit.
And the gold, hooped decals? Well, all you have to do is check out her huge earrings to see where the inspiration for those came from!
Jessie's cleverly thought out mani is all thanks to her go-to nail guru, Jenny Longworth who has been creating Jessie's arty nails for many years.
To copy her look, paint your nails with a clear gloss, then do your tips with a solid, black polish like Mavala Mini Nail Colour Cream in Black, £4.75, boots.com.
And if your brush skills aren't the best, you can always cheat with some black-tipped falsies such as Ted Baker Faked to Perfection Nails, £8, boots.com.
Next, paint a clear topcoat over the top, then when this is drying, gently press a small gold hoop at the base of each black tip. We found some gold and silver nail hoops on ebay.co.uk which are a bargain at £1.62 for 120!
To finish, use a thin nail art or eyeliner brush to dot a tiny black circle of polish in the middle of each hoop.
Anything you can do Jessie, or should we say Jenny?...
Let us know what you think of Jessie's latest manicure below. Our fave comment across the site each week wins £50!
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!
Got an iPad or iPhone? Reveal Mag is specially designed to fit!