(Cover) - EN Showbiz - Gwyneth Paltrows mother worries about how stressed the star gets because shes such a multi-tasker.

The Hollywood star is a famously high achiever. As well as a successful career which has seen her win a best actress Oscar, the 38-year-old raises two young children with her rocker husband Chris Martin. She also finds time to socialise with her wide group of friends, including Madonna and Stella McCartney, and has her own website called GOOP, which she uses to dispense lifestyle advice.

Gwyneths mother Blythe Danner is in awe of her daughters hectic lifestyle, and admits she sometimes fears the star has taken on too much.

She's a multi-tasker, Blythe explained. We had dinner last night and I said, 'Honey, please, it's great that you multi-task, but it's a lot of stress to do that, and I want you to take care of yourself. You've just got to.'"

As well as acting, Gwyneth is an accomplished singer and showed off her vocal ability in movie Country Strong. She also busted out a tune during a recent stint on American series Glee, thrilling with her rendition of Cee-Lo Greens worldwide smash F**k You.

Earlier this week it was announced Gwyneth and Cee-Lo will be performing a duet at the Grammy Awards this Sunday, and Blythe has no doubt she will blow people away.

She was nervous when she sang at the Country Music Awards [last year], but once she got into it, she was fine," she told E! Online. "They stood up - these 2,500 professionals! She's singing in front of the industry and she got a standing ovation. I was thrilled for her. She loved it. (C) Cover Media