CONGRATS!! Rick Ross New Baby Mama Briana . . . Is PREGNANT AGAIN!!!

Congratulations to rapper Rick Ross and his baby mama Briana - they're expecting their second child together. The pair have a 9 month old daughter together, named

And the pair are expecting another bundle of joy in a few months. YT News learned that Briana is 8 months pregnant - and that she's expecting a BOY this time.

We're also told that Ross and Briana are extremely happy with their expanding family - and that the two are talking about getting MARRIED next year.

Briana is the latest "rapper wife" who is about her business. Like Gucci Man's wife Keyshia, Briana is a very successful business woman.'

Here's Ross with their daughter:

But Rick better watch out because according to TMZ he's currently being SUED...

According to TMZ:

Rick Ross' entire "Maybach Music" marketing strategy is a rip-off, jacked from a 2007 track with a similar name ... so says a rapper in a new suit.

shaq R. Muhammad -- aka Young Muhammad -- threatened to sue Da Boss back in September 2017, claiming Rick stole the catchphrase -- frequently dropped on his songs -- from Muhammad's 2007 jam, "Caprice Music."

According to new legal docs ... YM says he featured Rick on his "Caprice Music" single and Ross could be heard saying the phrase all over the track. Muhammad claims that's where Ross got the idea for "Maybach Music" ... and he's been using it ever since.

Muhammad's officially taking Rick to small claims court now, and wants $9,999 for theft of his intellectual property. He's also suing Roc Nation for endorsing "Maybach Music."