London, Dec 8 (ANI): Jennifer Lopez is reportedly 'freaking out' with the amount of weight she is piling on during her pregnancy.

The singer is currently expecting her first child with hubby Marc Anthony, and is in the first month of her second trimester.

However, a source revealed that though JLo is delighted to be pregnant, she's not happy with the amount of weight she's putting on.

"Jennifer is delighted to finally be pregnant, however she has already put on more than 3 stone and she is only around four months gone," the Daily Snack quoted the source, as saying.

"She is huge and is freaking out!" the source added.

The insider revealed that Lopez was now planning to follow in Victoria Beckham's footsteps and 'hibernate' during the last few months of her pregnancy.

"Her face has gotten really puffy from retaining a lot of water. She plans to do a Victoria Beckham now and hibernate for the last few months," the source said.

"You won't be seeing much of her in public from here on in."

The figure-conscious singer has always been careful to keep fit - even waking at 4am to work-out daily with trainer Gunnar Peterson. (ANI)