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