She couldn't get her sushi fast enough!

Now we know how Kendall Jenner gets that perfect tush of hers -- she runs to her meals! Decked out in workout gear, the model was in hot pursuit of a Sugarfish sushi situation when she scurried into the trendy Los Angeles sushi spot.

Kendall is a busy bee! This morning, the 19-year-old was geared up for the red carpet, outfitted in Topshop culottes and a Sass & Bide shell, for the Kendall + Kylie for Topshop launch at the Grove. But in a blink of an eye, the reality star was in her off-duty wear, wearing no make up and grabbing some sushi with friend Hailey Baldwin. When you are a Kardashian -- your life is all about go, go, go!

Hailey also accompanied Kendall to her big launch event earlier in the day. It looks like the gals are making a day of it together! These two ladies are attached at the hip!

After the quick bite, Kendall Jenner stopped by health food store Erewhon in West Hollywood for some healthy snacks. Gotta bulk up on nature's best to keep that tight tush of hers! We tried to ask about her dad (can we still say "dad" even though we use the feminine pronoun now for Caitlyn?), but she didn't exactly feel like commenting ...