Jana Defi net worth: Jana Defi is a Czech glamour model who has a net worth of $400 thousand dollars. Born in Prague, Czechoslovakia, Jana Defi began her glamour and nude modeling career in 2005, when she was featured on a Polish erotica site. She has become popular for her slim body, and large breasts which have sparked a great deal of controversy. Many people insisted that her breasts were implants, until she underwent a live sonogram to prove that they were, in fact, real. Not only are they real, they have also continuously produced milk since she reached puberty. She has been featured in the magazine, Loaded, multiple times, and has also appeared on the publication's cover. She has also been a featured guest on various talk shows. She launched her own website in 2008, but subsequently retired from glamour modeling in 2010, and has seemingly abandoned any sort of online presence.