Mariah Carey has two babies, but only one mother! That's the message that jewelry designer Joan Boyce, a longtime friend of the singer, broadcast over Twitter after she was mistakenly identified as Carey's mother... and not for the first time! "M, congrats on BET Honors! Did you see they called me your mom again?" Boyce tweeted at Carey last week. "it's so silly! You only have one mom and that's Pat Carey."

"You'd think after she sang the duet with me last year & performed on my ABC Special in front of millions, people would get it!" Mariah responded, posting the video of the duet below. "I was extremely pregnant but here's a link to our moment together on stage 4 anyone who didn't see it. That's my momma!"