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