Kylie Jenner Was Emotional At Her 21st Birthday Party Because She's 'Very Proud' That She 'Has Accomplished So Much Already'

Kylie Jenner is bursting at the seams with pride! The now-21-year-old has been celebrating her birthday all weekend thus far, with family, friends, Travis Scott and Stormi Webster by her side — and it's all making her a little emotional! Related: Kanye Says He Wants To 'Smash' All Of Kim's Sisters… According to a source with knowledge of