Somebody certainly had a good night in their LBD this weekend and that someone is Diana Vickers! The X Factor semi-finalist was spotted in London celebrating her 21st birthday, a week early, in the Whisky Mist nightclub in Mayfair in a super-flattering 70s-esque black dress.

Turning 21 is a milestone for anyone, and Diana certainly seemed to be making the most of her big day as she drank, danced and partied the night away with her friends and model-come-musician boyfriend, George Craig. Diana wore a black body-con maxi dress with sheer panel detailing to accentuate her slim figure, which she accessorised with a gold bracelet on her upper arm, gold drop earrings and printed high heels. Diana finished her look with dramatic eye make-up and a classic up-do which she tweeted a picture of before hitting the club... but as the night went on her picture perfect pout slipped somewhat!

Whether you are celebrating your 21st or not, Team LBD think you should follow in Ms Vicker's fun and fashionable footsteps and party the night away in our sexy selection below- but if you find yourself pulling a pose similar to darling Diana, we recommend avoiding all paps and Facebook fanatic friends!

Hedonia Alex Dress, £65.00, Brandts Chalcedony Tortola Drop Earrings, £32.00, Fiorelli Gold Twist Bangle, £19.95, Bourne Adele Shoe, £167.00.