Chris Brown Scandal: Karrueche Tran Ex Upset with Baby Mama Over Royalty's Birth Certificate

Though a recent paternity test has confirmed that Chris Brown is the father of 10-month-old daughter Royalty, the R&B superstar and ex to Karrueche Tran is not listed on her birth certificate – and he allegedly has a big problem with that.

According to sources, Brown was upset to learn that the "father" on Royalty's birth certificate is another man, Brazil "Ba" Riesling––the mother's current boyfriend.

Ba helped the baby's mother, Nia, raise the baby since birth and still considers himself the father of baby Royalty.

 God has blessed me with my twin. #ROYALTY

A photo posted by @chrisbrownofficial on Apr 16, 2015 at 7:46pm PDT

Ba recently posted a photo on Instagram of himself feeding Royalty and showing off new tattoos that profess his love for the baby and her mother. The fresh ink spells "Nia" across his forearm with a crown in honor of Royalty right above it.

Since Brown is busy recording, performing and touring, Royalty spends more and more time with Ba, and according to sources, he's worried that she'll start calling the wrong man "dad."

"This is infuriating and insulting to Chris and he's eager to get Royalty the hell out of Texas for good. He doesn't know what this man is telling her. He's scared that this low-life might even be trying to tell Royalty he's her father," a source said online. "Chris would be beside himself if Royalty even thinks that or calls that dude 'daddy.'"

"Chris doesn't want her around him under any circumstances and he's made that very clear to Nia," the source adds.

Brown has his lawyers on the case, and they're currently negotiating with Nia to change the birth certificate and name him as the biological father.

Drama aside, Brown seems to be quite enamored with his adorable daughter, posting pics and videos on his Instagram of the two spending time together. He even posted super cute pics of Royalty hanging out with her grandmother, Joyce Hawkins.