Britney spear accident ✔wardrobe mishap}
Britney spear flashing her ❣sensational curves}
Britney spear unintentionally revealing a bit too much}
Britney arrow ❣showed inadvertently}
Britney lance ❣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.