Photo editing: Change shirt of subject in a photo.

"I have a photo of my husband and I would like to get an estimate on changing. I have a couple of requests:

 

~ I have a professional shot of he and I that I would his shirt changed in, to have a collar, like a polo or button down.
~ In the same shot if the background could be changed to outdoor that would be great.
~ I have a picture of he and I professionally shot. If I could be edited with a little weight loss that would be great too.

 

I lost my hair and put on weight, so I am trying to get pictures I am comfortable with. Your help and quick response is appreciated."