Get When Is Kendall Jenner's Birthday Pics . Kendall jenner rang in her 21st birthday with a bang … and lots of champagne! To kick things off on wednesday night, jenner and an intimate group of friends and family dined at hot spot catch l.a. Kendall Jenner Looked Like A Sexy Disco Ball At Her Birthday Party from hips.hearstapps.com Kendall began modelling in 2010 when she featured in paper magazine with her younger sister, kylie. We dreamt about the day when you'd turn 21 & i'd be 19. Willing and able to take sloppy seconds, thx. When she heard the news, jenner said, i was so excited! Willing and able to take sloppy seconds, thx. Willing and able to take sloppy seconds, thx. When she heard the news, jenner said, i was so excited! We dreamt about the day when you'd turn 21 & i'd be 19. Source: img.gossipcop.com Kendal