(Cover) - EN Star Style - Jessica Simpson has reportedly been ending work-out sessions in tears because shes training so hard.

The 30-year-old American singer-and-actress is famed for her voluptuous body, and is said to be working out extra hard at the moment to prepare for her upcoming wedding to former American football player Eric Johnson.

Jessica and Eric announced their engagement last November, and the blonde beauty has enlisted the aid of personal trainer to the stars Tracy Anderson in a bid to look even better than usual on the big day.

As the lady behind Gwyneth Paltrows knockout body, Tracy is famed for pushing celebrities to the limit, and her regime with Jessica is sad to be no different.

She's been finishing sessions in tears but you can see the results, a friend of Jessicas is quoted as saying.

The star has been trying her hand at a variety of athletic pursuits, ranging from meditational exercises to aerobics. It is believed the regimen is having the desired effect, although it isnt coming easy. She is doing everything from yoga to kickboxing and it's leaving her exhausted, added the pal. (C) Cover Media