Chris Brown got a special visitor Monday when he blew through Houston ... his daughter Royalty. The 9-month-old was chaperoned by her mom, Nia Guzman and her half-sister. We're told that Royalty and crew were picked up by limo at a Houston hotel where they were staying and taken to Chris' tour bus, where he chilled with his kid. Chris had a concert in Houston Monday night. Hard to imagine Royalty will be front and center, but anything's possible ... maybe she'll even meet Trey Songz.