Kylie Jenner: I'll Let My Feet Do the Talkin'

Kylie Jenner beat a hasty, silent retreat at LAX late Wednesday ... still wearing her Adidas as a faint show of support to Kanye.

Kylie was returning from NYC, hours after PUMA announced she is becoming the face and feet of the brand. As we first reported, Kylie blindsided Kanye and Kim ... never telling them she was cutting a PUMA deal.

Kanye was pissed but says he's over it, but you gotta think secret deals between members of the brood won't create warm feelings.