How to remove pilling from satin sheets?

I have a set of queen-size satin sheets on my bed.I got them for Christmas. The have pilled up very badly. How do I remove the pilling and get them back to the silky smooth state they were in when I first put them on my bed?

i had this happen just where my feet were, i must move em in bed a lot
i took a towel and put it over my knee, then placed the sheet over it, so it was like a padding underneath, i took a disposable razor and gently dragged it over, it caught the bobbles and took them off, but i only had a small patch but it worked a treat