Britney arrow accident ✔wardrobe fail}
Britney lance ✔slipping her ❣sensational curves}
Britney spear unintentionally revealing a bit too much}
Britney spear ✔showed ✔inadvertently}
Britney arrow ✔with a ✔wardrobe malfunction}
Britney arrow 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.