Rihanna and Justin Bieber are set to take over the main stages of V Festival this weekend.
Bieber makes his debut at Hylands Park in Chelmsford, Essex, on Saturday alongside acts including Sia, Bastille, Jess Glynne and Stormzy, before moving to Weston Park, Staffordshire, on Sunday.
Rihanna will then share the main stage in Essex with David Guetta, Little Mix and Years & Years on Sunday night, having performed at Weston Park the day before.
Bieber is planning to make a splash with his set. He has requested 800 gallons of purified water at exactly 40C as part of a huge spectacle happening during his show.
The festival said the production is one of the most challenging in its 21-year history.
Other acts among the line-up include the group Faithless, American singer Halsey, garage star Craig David, rapper Tinie Tempah and the Kaiser Chiefs.