The 25-year-old star was recently spotted with her underwear around her ankles at a charity event and reports suggested she had been up to no good with her boyfriend Jonathan Powell.
However the Welsh star has now admitted she was just desperate for the toilet after drinking a whole bottle of wine.
She said to UK's Reveal magazine: 'I happened to find myself desperate for a wee with the toilet cubicles all occupied.
'I had also consumed a bottle of wine. It was Jonathan who noticed that there was some guy filming me and he tried to pull me away.
'Regrettably, oh-so regrettably, I had not the time to pull up my rather large pants. I hope I can be forgiven for these antics but, you know, when you've gotta go, you've gotta go.'