Natalie Portman and Ashton Kutcher take their friendship to the next level in the debut trailer for Ivan Reitman's'No Strings Attached,' available exclusively on Moviefone.
'No Strings Attached Trailer'

In the film, Portman and Kutcher play two friends who agree to start a casual fling, thinking they can do it without any emotional baggage. Sounds easy enough, right? Sure -- that is, until love gets in the way. From then on, they must decide whether they can actually make their newly defined friendship work.

Watch the trailer now, then be sure to see 'No Strings Attached' when it hits theaters on Jan. 21, 2011. And check out the official movie site at
No Strings Attached
Based on 36 critics

Two lifelong friends (Natalie Portman, Ashton Kutcher) try not to let sex ruin their relationship. Read More