The high-street retailer H&M has announced that its next collaboration is with the Paris-based Italian designer Giambattista Valli. Project Love was revealed on Thursday evening at the Cannes film festival. Looks from the Giambattista Valli x H&M collection were worn by celebrities attending the event, including model Kendall Jenner in a flourescent-pink tulle dress, the influencer Chiara Ferragni in a pale pink dress with a train, and the musician H.E.R. in a white gown with appliqué detailing. Selected pieces from…