Kylie Jenner Can't Handle How Fast Stormi Webster Is Growing!

It seems like it was just yesterday when Kylie Jenner was a 10-year-old on the first season of KUWTK!
And now the 20-year-old (*almost 21*) has a little one of her own, who is apparently growing way too fast!
Related: Stormi Looks SO BIG In Kylie's Latest Pic!
The reality TV starlet took to Twitter on Thursday to get sentimental about Stormi Webster's growth spurt. She wrote:Stormi will be 6 months in 6 days.. how did this happen? Moms, do your babies grow as fast as mine? 🤣— Kylie