HAIM and Emma Stone have joined forces to give one lucky winner (and a friend) an unforgettable experience. They've teamed up with Omaze Inc. to bring the competition winner for a VIP night to see the Spice Girls in London with flights and hotel costs covered, and it doesn't end there.

The band made the announcement on their Instagram account adding "what’s even crazier is that we’ll meet the spice girls BACK STAGE". Not only will the winners meet Emma Stone and Este, Danielle and Alana from HAIM, but you will meet Geri, Emma, Mel B and Melanie C.

HAIM and Stone wish to raise funds for several organisations as well. "The best part about this whole experience is that your donations go into supporting some INCREDIBLE organisations," such as Global Girls Alliance, Child Mind Institute, Comic Relief UK, Girl Up Campaign, the Los Angeles LGBT Center and PATH.

In a final note the pop rock band highlighted one rule they had upon entering: "yes, dancing is mandatory ❤️" Watch the clip below of the girl power foursome explaining the competition and recreating the Spice Girls' hit 'Stop'.

Emma Stone has shown her obsession for the Spice Girls over the years, even crying from a video call from Mel B. It may be more of a treat to sit beside the actress and witness her reaction to seeing the girl group in concert. Watch this hilarious moment on the Graham Norton Show when he hypes Stone up to believe the singers were about to make a surprise visit.

How to enter

Visit Omaze and make a donation, depending on the amount you can receive different prizes as a 'thank you' from the girls, such as a signed La La Land script and signed vinyls from the HAIM sisters.

The London concert will take place on 15 June, and the competition closes 16 May.

Eligible winners are, according to the site, "at least 13 years old to win. Winners under 18 years of age must be accompanied by a parent or legal guardian as their Guest. Guest must be of legal age of majority in his/her jurisdiction of residence (and at least 18), unless Winner is the legal guardian of Guest and Guest is at least 5 years of age or older at the time of travel. In addition to Winner requirements (detailed below), Guest must complete and return a publicity and liability release prior to departure. If Winner is the legal guardian of Guest, Winner must execute and return all required documents on behalf of such child or legal ward"

For more information on the organisations involved, how to make donations and any other queries visit Omaze.