i, myself, read the hunger games as did many other adults I know and we all LOVED it... however, it's a little disturbing and not sure all 10 year olds would be okay with reading it. AWESOME series though, just disturbing.

DC is 9, but read several of the books others have mentioned here last year. Right now, she is waiting for the 4th book in the secret series, by Pseudonymous Bosch. Read the 1 and a half last year, then decided to pick up the second book again this year and read both 2 and three and is waiting on 4 (on hold at library and local bookstore doesn't have it in stock right now.)
She reads anything she can get her hands on.