Britney Spears is giving away two VIP tickets to the fan who wears the best Halloween costume to her concert on Friday (31.10.14).

The 32-year-old pop star wants to make her 'Piece of Me' show on the spooky holiday a memorable one and has promised an unforgettable experience to the person who impresses the most with their outfit.

She wrote on Twitter: ''What's a Halloween party w/o a costume contest? Saved 2 VIP seats @ #PieceOfMe on Fri for whoever comes best dressed! (sic)''

The 'Gimme More' singer also included a link to her official website with full details of how to enter the competition at the residency gig, which takes place at the Planet Hollywood Resort and Casino.

The post read: ''Are you celebrating Halloween with Britney at 'Piece Of Me'? Come to the show dressed in your best Britney costume to win 2 upgraded VIP seats!

''Tweet a picture of yourself in costume at The Axis Theater at Planet Hollywood Resort using #Britneyween to enter. If you're selected, you and a guest will enjoy the show from a VIP table in the front row!

''Must already have 'Piece Of Me' tickets to enter, and pictures must be taken inside The Axis Theater with the hashtag #Britneyween. Only Britney Spears costumes will be considered for contest entry. (sic)''

At the moment, Britney is due to continue her residency until February 2015.