Can you guess who I am?

I have colored hair and I have pretty nails who am I?

I love maths,I  have a son and i have brown hair who am I?

I am very tall, I am good at ICT and i love class 17, who am I? 

I am very tall,I have brown hair i also have a small beard, who am I?

I am on the top of the league on blogs, I love Chelsea, who am I?