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