The 31-year-old singer and her fiance signed a document under their full name and also listed their parent's names.
The license is valid till 30 days from date of issue, reported E! News.
'Tie it up' hitmaker clarified that she is not married yet but is planning for a small ceremony.
"OK, this is why it's confusing, I'm not married yet, because we had a wedding planned, like a huge one and we still have a wedding planned, but we're not doing the big huge one," she said.