Jennifer Lopez is aiming to hastily lose the weight she gained during pregnancy and has flown her personal trainer from California to New York to help her trim down.

The Latino singer, who gave birth to twins Max and Emme last month, is so keen to ditch the baby fat she’s enlisted the help of Beverly Hills-based fitness guru Gunnar Peterson.

A source close to Peterson tells the National Enquirer: "She wants to lost the baby weight fast. She wants to trim at least 20 to 25 pounds right away. She put on almost 40 pounds when she was pregnant with the twins.

"Jennifer called Gunnar and asked him to get on a plane as soon a possible to come to New York.

"Gunnar has Jennifer doing different high-cardio workout programs at her home gym for an hour to an hour and a half every day."

Do you think there is too much pressure for celebrities to lose their baby fat as soon as they’ve given birth? Be sure to leave your comments below.