Kylie Jenner's expanding her business empire ... she's getting into the baby biz!!! According to docs obtained by TMZ ... Kylie's filed trademarks for "Kylie Baby" and it seems as if she's gearing up to launch a baby line that'll cover just about everything your average baby mama's gonna need with a new little one in tow. Also, Ariana Grande may be the master of her domain, but not the master of her likeness ... so claims a photographer who is now suing her for allegedly ripping off these photos.