Actress Jessica Biel - who is engaged to Justin
Timberlake - leaves parties if people's behaviour seems to be getting too wild
or out of control.
She said: "If there is a huge drug fest happening and
everyone is getting it on in the bedroom, it is probably time to leave."
Jessica's sensible attitude stems from her teenage years
where, even though she was a working actress, she still had to live by her
family's rules.
She explained in an interview with The Sun newspaper:
"I was lucky to get a part in a long-running TV series, '7th Heaven', when
I was 14, and everything took off from there.
"It was like having two families, my real one and the
cast. My mum had me under curfew, so I was well known on TV
at the same time as having to be back home early."
Jessica also credits her mother Kimberly with giving her a
sensible attitude to her body image.
She said: "My mum Kim taught me an important lesson in
Hollywood - if someone says you are too fat, tell them to p**s off. My mum brought me up with sports and a healthy image.
It was just how we lived. With her attitude and upbringing, I have been lucky
not to have an eating disorder or a drug habit to stay skinny."
"I am 5ft 7in and don't go along with the Hollywood
obsession with weight."