Newlywed Nicki Minaj Is 'Happy' but 'Wanted to Keep Her Wedding Low-key': Source

When it came to planning her wedding, Nicki Minaj knew that she didn’t want anything too extravagant — at least initially.

The rapper, 36, announced the news of her marriage to Kenneth “Zoo” Petty, 41, on Instagram Monday, surprising her fans as she constantly referred to Petty as her “husband” in the past, but the two never publicly tied the knot.

Following the exciting news, a source told PEOPLE Tuesday that the “Super Bass” singer wanted the celebration to be kept simple.

“Nicki wanted to keep her wedding low-key,” the source said. “She’s become much more private over the last year, but she is very happy.”

Minaj’s newsworthy post on Instagram showed matching “Mr. and Mrs.” mugs and black and white baseball caps that had “Bride” and “Groom” written across the front.

Keeping it short and sweet, the rapper captioned the short clip, “👰🏽🤵🏽😢🙏🏽🎀 Onika Tanya Maraj-Petty 10•21•19” — referencing her new official name and seemingly the day that she and Petty officially tied the knot.

Reps for Minaj did not immediately respond to PEOPLE’s request for comment.

On the Aug. 12 episode of her Queen Radio show, Minaj revealed that she had filed for a marriage license and would be married in “about 80 days.”

“We still had to pick it up and I was traveling, by the time I came back, we had to renew it again,” she explained. “From that time, you have 90 days to get married. That was about a week ago, so now I have about 80 days.”

RELATED: Nicki Minaj Is Married! Rapper Weds Kenneth Petty After Less Than a Year of Dating

Even though she made it official, Minaj still had music priorities to attend to.

“I have to work on my album and I have a lot to focus on that I don’t want to do the big wedding now,” she said at the time. “We’ll do the big wedding later.”

The rapper then raved about her beau, saying, “I’m very happy about that because my baby makes me so happy.”

Minaj and Petty have been dating since 2018, going Instagram-official with their relationship in December of that year.

“He want me to be his wife- his MISSIS like SIPPI NOW,” she captioned a series of photos of the two of them laughing together later that month at her birthday party (as well as a video of her grinding up on him).

RELATED: Christina Aguilera, La La Anthony & More Congratulate Nicki Minaj After She Marries Kenneth Petty

Since then, the two have been hot and heavy on social media, posing in photo after photo together. Petty even debuted a new tattoo of the rapper’s birth name, Onika, weeks after they went live with their love.

In March, Minaj sparked questions about whether or not she had married Petty after calling him her “husband” on her radio show.

“Every night when I get out of the shower, my husband takes this really good lotion that we just bought, and he massages my feet, and rubs them, and he rubs each toe individually, and the heel, and the ball of my foot, and he does it all,” she said.

The same month, she posted a photo with Petty in France, along with the caption: “Bae out in Paris.”

Back in June 2019, Minaj revealed on her new Queen Radio show on Apple Beats 1 that she and Petty had gotten a marriage license

“We did get our marriage license,” she said. “I think I have what I was striving for, just happiness. It was so hard to get to a happy place. Now that I’m there, I don’t want to compromise that for anyone or anything.”