The SKIMS founder—who also shares kids North West, 11, Saint West, 9 and Psalm West, 5 with ex Kanye West—celebrated her daughter’s seventh birthday ... as the 7-year-old recently debuted ...

“Chicago is SUCH a pretty girl. This is Kim twins for sure. Happy Birthday,” said a fourth ... of silly pictures she took with the now-7-year-old on Instagram. kimkardashian/Instagram "You ...