There was an article in our Diocesan Newspaper awhile back about this topic. While there is no direct Church commentary on the issue, one can surmise that if said surgical procedures are done for cosmetic reasons, it could not be squared with our Catholic understanding of the body. Medical or hygenic reasons are another matter. But if one is concerned only with “appearances”, one would have to question why those body parts are making “appearances” that would be judged by the way they look.