The former Destiny's Child star was reported to have taken the role to Beyonce and Jay-Z's first child.
The singer told E! News that she already has godchildren - but one of them isn't Blue Ivy.
"I am a godmother. My godchildren are all in middle and high school right now, which is so weird," she went on.
Asked whether she wanted to get hitched and become a mum, she replied: "I don't know. Too busy with the career.
"I do want kids, I do want to be married. But, I want one kid."
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? firstname.lastname@example.org
You're extremely attractive. Take this opportunity to ask for some favours. It will be difficult to resist your charms. Taking some courses can improve your professional prospects. Don't be afraid to pursue a career in the arts. Friends may tell you it's impossible to make a living in the creative field, but they underestimate your ability. Your combination of imagination and pragmatism will help you make a good living. Anything that involves working with your hands is sure to appeal to you.More