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