Beyonce's fans worldwide might have to wait a while for her album -- because this superstar loves being a full-time mom to Blue Ivy Carter!

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Since giving birth to her first child with hubby Jay-Z Jan. 7, the "Love on Top" singer, 30, has been holed up in the couple's Scarsdale, New York mansion and $6.85 million Tribeca loft nursing her daughter.

"She has been totally doting on Blue," a source close to the diva tells Us. "She's up whenever the baby's up!"

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And the self-described workaholic -- who typically toured, recorded albums and promoted her perfumes and clothing line at a nonstop clip -- welcomes the lifestyle change.

"She's enjoying this time off," the source says.

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"The baby's gorgeous," Beyonce's pal Kelly Rowland told Us. "So much hair!"

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