Hip-hop's "Queen B" just gave birth to a little princess on June 9, Us Weekly confirmed.

Lil' Kim reportedly gave birth to a healthy baby girl on Monday at 9:58 a.m. EST in New Jersey. Kim's daughter weighed in at 6 pounds, 5 ounces, according to an Us Weekly source.

So what did Lil' Kim name her little princess? Naturally, the 39-year-old rapper kept up with the royal theme and decided to name her daughter Royal Reign.

It seems that Kim may have decided on the name a while ago given that her baby shower invitation featured a royal crown with a princess theme.

"Happy Easter everyone !!!!," Kim posted on her Instagram account two months ago.

She said, "What a perfect day to share this wonderful news with U. The fab @davidtutera is throwing my royal baby shower for my lil' princess 5/10/14!!! Thank U for the awesome graphic @dustyaceti !!!! Muahhhh!!! #TeamLilKim. Love U all so much !!! Muahhhh !!!"

Check out the Royal invitation here.

Lil' Kim didn't make an official birth announcement on her Twitter account like most celebs do. Instead, she opted to let her celeb friends and media outlets do the talking.

Since yesterday, Kim has been retweeting news sites and her friends that have all congratulated her on her new bundle of joy.

"Congratulations 2 my sis ‪@LilKim & her precious healthy Babygirl ‪#RoyalReign May she be Blessed! I'm happy 4 u kimmy (hugs)," Missy Elliot tweeted yesterday.

"Congrats to my bb and her bb ‪@LilKim," Miley Cyrus wrote.

Lil Kim and her baby Royal Reign received so many congratulations that the hashtag #royalreign became a trending topic on Twitter yesterday.

Baby photos have yet to be released. And the baby's father still remains unclear, though rumor has it that Reign's father is New York-based rapper Mr. Papers.

What do you think of Kim's choice for the baby name? Share your comments below.

Congrats, Lil' Kim!