Britney spear slip slip}
Britney lance showing her ✔sensational curves}
Britney spear unintentionally revealing a bit too much}
Britney spear flaunted ❣inadvertently}
Britney arrow with a ❣wardrobe malfunction}
Britney lance caught in an embarrassing slip-up}
Britney
lance ❣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.