Nike is hosting an intimate gig with Jessie J in a top secret central London location next Wednesday and since we're hosting We Own The Night 10k (WOTN) with Nike for a second year this May, they're rewarding five ELLE readers with a ticket and a plus one.

Last year Nike featured singer Jessie J in its 'Just Do It' ad campaign. At the time Jessie said, 'Nike challenged me to Just Do It, so I’m doing it. I’ve been hitting the gym hard already and I hope that in some way I can help inspire more women to take up the challenge.'

For any of you who ran WOTN last year you'll know that Nike knows how to throw an impressive event. For you and a friend to be part of this Nike experience, that is set to be pretty unforgettable, next Wednesday 26 February all you have to do is email elleexperience@elleuk.com and tell us which designer's dress she was wearing at the ELLE Style Awards this week.

Closing date: 11:59pm on Monday 24 February.

Clue? You can find the answer in our best-dressed gallery here (aren't we good to you).