On September 22, 2020, Princess Stephanie’s eldest daughter, Pauline Ducruet opened her "Alter Designs" pop up store at the Yacht Club in Monaco. Princess Stephanie of Monaco and Camille Gottlieb attended the opening of the pop-up store of the fashion brand 'Alter' at the Yacht Club.
Pauline Ducruet launched a unisex eco-fashion brand called "Alter Designs" in 2018. Her first pop-up store was opened at one of Monaco’s event spaces, Tunnel Riva, between June 18 and 20. She opened her second pop up store at Métropole.