Riders at the Tour de France Femmes were subject to extra clothing checks before Tuesdays stage following claims some could be using extra padding in their bras to seek an aerodynamic advantage.A communique from race organizers confirmed the checks after Dutch outlet Wielerflits reported some teams had raised concerns that padded bras could smooth the airflow around the body for the stage four time trial.Riders must be to the final checks before the race (bikes and outfit) no later than 10 minutes before their respective start time, the communique said.Particular attention will be paid to compliance with article 1.3.032 of the UCI regulations, including non-essential elements and clothing or other items/accessories worn by a rider (including but not limited to helmets, glasses, shoes or in-race communication devices) which could modify riders morphology.The UCI defines non-essential elements as any element which does not have a purpose which is exclusively of clothing or protection, or which is not strictly necessary for the functionality of the clothing, or other item, or accessory.Marlen Reusser won the stage to go into the leaders yellow jersey, completing the rolling 21km route between Gevrey-Chambertin and Dijon in a time of 27 minutes 30 seconds to win by four seconds from Lieke Nooijen.British time trial champion Zoe Backstedt finished fourth, 20 seconds down.Reusser now leads overall by 14 seconds from 2023 winner Demi Vollering.