1. "Bad Romance" - Gaga wears a futuristic, robotic bodysuit with angular shoulder pads, a metallic corset, and thigh-high boots.
2. "Alejandro" - She changes into a sheer, sequined bodysuit with a long, flowing train and a large feathered headpiece.
3. "Monster" - Gaga dons a more monstrous costume, featuring a black latex bodysuit, spiked shoulder pads, and a grotesque mask.
4. "Speechless" - For this emotional piano ballad, Gaga wears a simple, elegant black dress with a sheer overlay and minimal accessories.
5. "Just Dance" - She returns to a high-energy performance, wearing a metallic crop top and shorts, along with fishnet tights and knee-high boots.
6. "LoveGame" - Gaga appears in a raunchy, dominatrix-inspired outfit, complete with a black leather bodysuit, thigh-high boots, and a whip.
7. "Paparazzi" - For the dramatic final song, Gaga wears a flowing white wedding dress, which she dramatically rips off to reveal a red bodysuit beneath.
It's important to note that the exact sequence of outfit changes and specific costumes may have varied slightly throughout different legs of the Monster Ball Tour, but these are some of the key outfit changes that occurred during the show.