'Horrible Bosses' actress: 'Jennifer Aniston will surprise'

Lindsay Sloane has confessed that she was shocked by Horrible Bosses co-star Jennifer Aniston's performance in the film.

The Weeds actress revealed that she was sceptical of Aniston's ability to pull-off such risqué material but was impressed by her performance once shooting began.

Sloane told E Online: "I read the script and I was like, 'There's no way that sweet Jennifer Aniston is going to say these words and they're going to sound sexual and aggressive' but then it was like, 'Whoa, she's like a crazy diva sex machine'.

"She ad-libbed a lot. Sometimes she would say things and after they would call cut, she would be like, 'I don't know. Isn't that taking it a little too far?' But then everyone loved it."

Aniston previously expressed her excitement at portraying a sexy dentist in Horrible Bosses, describing the role as "fun".

Horrible Bosses follows three friends - played by Jason Bateman, Charlie Day and Jason Sudeikis - who plot to kill their bullying employees with the help of Jamie Foxx's Dean 'Mother F**ker' Jones. Jennifer Aniston, Kevin Spacey and Colin Farrell take on the roles of the three bosses.

Watch the red band trailer for Horrible Bosses below: