Britney spear accident wardrobe fail}
Britney spear revealing her ✔sensational curves}
Britney arrow unintentionally revealing a bit too much}
Britney lance ✔exposed inadvertently}
Britney lance ❣with a ❣wardrobe malfunction}
Britney lance caught in an awkward ✔slip-up}
Britney spear ❣accidentally ✔flashing ✔on stage
Britney arrow with a ❣accident of elegance
These are just a few examples. Feel free to mix and match the synonyms to create more unique content.