She has expressed concerns about her derriere not being on form after 'pigging out on pasta'. Babe: Gwyneth Paltrow, 46, ensured all eyes on herself as she attended the Valentino Haute Couture Fall/Winter 2019/20 show during Paris Fashion Week on Wednesday The star looked every inch the Grecian goddess in the low-cut white number which skimmed her figure to perfection. …