Chris Brown Baby Mama Says He Cheaped Out on Royalty's Birthday

5/28/2015 2:30 PM PDT
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Chris Brown's daughter Royalty got a phone call from her dad on her first birthday ... but a source close to his baby mama says that's it.

Sources close to Royalty's mom, Nia Guzman, tell TMZ ... Brown didn't show up for the 1-year-old's birthday, didn't send a gift and didn't contribute to the cost of the Chuck E. Cheese's shindig. Nia says her boyfriend, King Ba, paid for the whole thing.

Ba -- who's listed on the birth certificate as Royalty's birth father -- seemed to take pleasure in Chris' absence and captioned one pic of Royalty by writing, "Wouldn't Miss This Day For Anything In This World."

Chris' people say he was in Miami shooting a music video with Pit Bull, and tried Facetiming with his daughter but Nia's phone was acting wonky.