Jane Fonda has credited her old friend Sara Blakely's Spanx creation for making her look elegant and toned on the red carpets at the Cannes Film Festival.

The movie veteran befriended Blakely when they both lived in Italy and she admits the undergarment icon has changed her life.

Fonda tells The Hollywood Reporter, "I wear Spanx on the plane, under pants. I wear waist-cinching Spanx. I also wear a Spanx bra... You get used to it."