i mean, exhausting but cool. i love it. >> just 20 years old, kendall's high fashion career set her apart from her sisters. flying back and forth from l.a. and new york to london and paris, she's got the life we >> you also have such an awesome model friend squad. kara, bella, gigi. >> yes. >> what it is like behind the scenes when you guys get together? >> we're like all super close and to be able to have such good friends doing the same exact same thing as you is really fun. >> kendall's stock in the fashion world went way up when she was named the face of the estee lauder beauty brand. >> they're such an awesome, classy, mature brand. >> of your family and sisters who is the most makeup obsessed? >> kim and kylee. it's a strong competition between them to two. they're really obsessed. they're really happy that i have this contract. >> kendall is not the only one of the family who really emerged this year. coming up, how kendal's sister khloe overcame hurdles emotionally and physically. we have the trainer getting her fit. >> then jane fonda, 78 years young.