I want to loose weight and get fit but how can not getting to muscley?

I want to loose some weight and get nice and toned but how can i make sure i dont get all muscley and butch looking? I currently weigh 9stone and im 5 ft 6 , i am detemind to get down to 8stone and have a nice toned body ,but what excersises should i avoid doing to not get big muscles i just want to get toned muscles not build them up??