Helping men get more smooches from their ladies, Kristin Cavallari joined Gillette's Kiss & Tell Live National Experiment, asking women whether a kiss with stubble or smooth shaven skin is better at Pioneer Court in Chicago on Monday (January 28).

The "Hills" star wore a black top, leggings, and a white blazer while she had men get a smooth shave before having their significant others give them a smack to find out whether kissing is better clean shaven or with stubble.

Excited to be in the Windy City, Kristin tweeted, "Here I am at the @Gillette #kissandtell experiment in Chicago! If you can’t join in-person, vote online at http://www.KissandTellUs.com."

However, fans should be careful that they are following the real Ms. Cavallari. Last Tuesday (January 22) the 26-year-old blonde beauty tweeted, "There's some psycho pretending to be me on Instagram with 10K followers. That's not me!!!"