Britney spear nip slip}
Britney lance flashing 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 spear ❣accidentally ✔flashing ✔on stage
Britney spear with a ❣slip of elegance
These are just a few examples. Feel free to mix and match the synonyms to create more unique content.