Don't even think of replying to those invites until you've shopped our edit of the season's best party dresses.
From high street treats to high end gowns, from Mango to Mulberry and from All Saints to Antonio Berardi, get ready to party like it's 1999 all over again.
Nanette Lepore burgundy dress, £350
For stockists call 0207221889
Religion Olsen Black Dress £105 at www.houseoffraser.co.uk
SuperTrash ivory dress, £102 at www.supertrash.com
Whistles LTD Edition Lia Jacquard Skater Dress, £175 at www.whistles.co.uk
Acne Mallory Dress, £220 at www.matches-fashion.com
Alice + Olivia rose print dress, £320 at www.harveynichols.com
Alice and Olivia prom dress, £445 at www.selfridges.com