Yes, she had her nose done....
She was already a good looking girl but i agree that the nose job was an improvement...
I am not against plastic surgery especially if the person looks better after which is her case. Most female celebrities are not 100% natural anyways.
The pictures you've posted are not really flattering. .Here are some better pictures of her before the nose job.
http://i.imgur.com/4RgFt.jpg