Why do spaghetti straps fall off my shoulders when I wear them

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Why do my bra straps slip off my shoulders when I'm sleeping at night? - Quora

Women Corset Dress Bodycon Mini Dress off the Shoulder Backless Long Sleeve Spaghetti Strap Mini Dress (A-a-Pink , S ) : Clothing, Shoes & Jewelry

Why do my bra straps slip off my shoulders when I'm sleeping at night? - Quora

Off-the-Shoulder Spaghetti Straps Max Dresses-Dusty Rose-Melantha

Why do my bra straps slip off my shoulders when I'm sleeping at night? - Quora

Cute Off-the-shoulder A-line Spaghetti Straps Homecoming Dress