If there's one thing we know about celebrity weddings, it's that they're big business. When famous faces tie the knot, they can easily find themselves lumbered with a six-figure bill, and, all too often, much of that is spent on the perfect wedding dress.

Jojo Siwa, Kristen Bell, Lady Gaga, Taylor Swift, Selena Gomez and more have all stood up alongside their BFFs as they tied the knot. See exactly what celebrity bridesmaids wore for the big day