Reese Witherspoon david letterman dress heels talk show

Reese Witherspoon was feeling the Valentines Day spirit as she donned a red-hot mini dress with a sleek black coat and Christian Louboutin heels to promote her upcoming romcom, This Mean War, on David Letterman's Late Show in NYC, on Monday night.

Unfortunately the film has been panned by critics, with a score of just 45% on Rotten Tomatoes, but the Oscar winner confessed they worked extra hard to ensure that the ending was a complete surprise.

'We shot endings where I could end up with Tom, or I could end up with Chris, or I could end up alone," Reese revealed. "Or I could end up with Chelsea Handler!'

Let's hope it's not the latter!