New Werchter Boutique-2020: Ellie Goulding! A great 3rd-the name for the dagfestival on Saturday, June 20, to take place in the Festivalpark. Headliners of this year’s edition is Taylor Swift. Previously, it was announced that 5 Seconds of Summer will be. Tickets for Werchter Boutique in 2020 and are on sale via proximusgoformusic.be and ticketmaster.be. The festival line-up will soon be completed.