India, Sept. 12 -- Lady Gaga, the Grammy-winning singer and actress, 40, has reportedly welcomed her first child with fiance Michael Polansky, marking a major personal milestone after years of balancing her global music and acting career with her hopes of starting a family.

Reports of the baby's arrival emerged after Gaga and Polansky were recently photographed together in Northern California. Page Six first reported that the couple had welcomed their first child, while PEOPLE later cited a source confirming the news. Gaga was seen carrying the baby during an outing with Polansky, giving fans their first glimpse of the singer as a new mother.

The couple, however, has not publicly announced the birth themselves. They have also kept detai...