If you've seen Big Brother at any point in the last two seasons, you know Rachel Riley.
She's the Las Vegas redhead with big breasts and a screechingly annoying laugh. And it appears those breasts are giving her a little more trouble than usual this season.
In fact, Rachel Riley's nipples have made more than one accidental appearance on the show's live feeds.
The first couple of photos show the most blatant slip as Rachel tries to take off her bra over a T-shirt.
More Big Brother - Take the Porn Survey
Tila Tequila Nude Full Frontal in Playboy
Big Brother UK's Harry Amelia Nude and Full Frontal
Andrea Rincon Nude To The Max In Maxim
Louise Cliffe Nude Could Steer Us Into A Wrong Turn
Big Brother 12's Kristen Bitting Topless In The Shower
Big Brother 11's Michele Noonan Nude on Foursome