Bucharest University Emergency Hospital said 25-year-old Victoria Lacatus had a girl weighing 6.4 pounds lbs.
A spokesman said the mother was being carefully monitored for post-surgery complications because she is morbidly obese.
Ms Lacatus was transported from her village in southern Romania to Bucharest because the local city hospital did not have any beds that could bear her weight.
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? email@example.com