Matt Sayles, file, Associated Press
FILE - In this Jan. 11, 2009 file photo, Beyonce, left, is joined by husband Jay-Z, as she arrives at the 66th Annual Golden Globe Awards in Beverly Hills, Calif. Through a rap verse, Jay-Z has confirmed the birth of "the most beautiful girl in the world" _ his newborn daughter. The song "Glory" made its debut on his social website Monday, Jan. 9, 2012, two days after he and Beyonce reportedly gave birth to a daughter, Blue Ivy.

NEW YORK — Through a rap verse, Jay-Z has confirmed the birth of "the most beautiful girl in the world" — his newborn daughter.

The song "Glory" made its debut on his social website Life and Times on Monday — two days after he and Beyonce reportedly gave birth to a daughter, Blue Ivy.

Reps for the superstars repeatedly declined requests for comment from The Associated Press about whether the birth had occurred, as first reported by E! News. But Jay-Z's sweet song gives fans the details, and more: "You're my child of a child from Destiny's Child."

In the song, Jay-Z talks about where the child was conceived (in Paris) and even reveals that Beyonce had a miscarriage at one point.

"Last time the miscarriage was so tragic/We was afraid you'd disappear/But nah baby you magic."

The sound of a baby's cries ends the song.

It's the first child for the power couple, who wed in 2008 in a private ceremony after a years-long courtship. Beyonce announced her pregnancy to the world last August at the MTV Video Music Awards with a simple rub of her swollen belly.

Celebs close to the couple have tweeted congrats. Beyonce's sister, Solange Knowles, tweeted Sunday morning: "The most beautiful girl in the world," while Beyonce's close friend Gwyneth Paltrow also tweeted: "Welcome to the world Blue! We love you already."

Online:

http://www.lifeandtimes.com

AP Writer Alicia Rancilio contributed to this report.

Nekesa Mumbi Moody is the AP's music writer. Follow her at http://www.twitter.com/Nekesa mumbi