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