What’s Your Number font here refers to the font used in the poster of What’s Your Number?, which is a 2011 American comedy movie based on Karyn Bosnak’s book 20 Times a Lady.
The font used for the movie title in the poster is probably Linotype Didot Pro Bold, a high contrast serif typeface designed by Adrian Frutiger for Linotype around 1991. You can view more details about the typeface here.
Download Didot Font
The Didot font identified above is not available for free, please follow the link above and purchase the font. Meanwhile, you can take a look at our collection of fonts for cars, pop music and apparel as well as round-ups of new & fresh fonts around the web.