Kylie Jenner: PUMA Says I Can Just Do It!

Kylie Jenner might be a slave to fashion, but she's definitely NOT to her employer -- since she's rocking Air Jordan 1s instead of PUMAs.

KJ signed a brand ambassador deal for PUMA's Fierce sportswear line, but we've learned the fact she was out in L.A. on Monday sporting Nike's Jumpman logo ... is no problem at all.

A PUMA spokesperson tells TMZ ... they don't restrict Kylie from wearing other brands. They believe it's better to give her the choice and let her express her own personal style. This explains why we've also seen her showing love for Kanye's Adidas brand Yeezys.

See? There's plenty of Kylie to go 'round.