I've been spray tanning the same client, who is also a friend, for over a year now and sometimes every week or two so have done loads of tans on her. Yesterday she was standing waiting for me to put her creams on and I noticed that one nipple was inverted...fully! It has NEVER been like that before. I said nothing and continued with her tan and noticed that as we finished it was back to normal. I know...or think I know....that this can be a symptom of breast cancer but what to do??? Also she has set off for a week's holiday today so there was no way I was going to say anything to worry her. She has come from an Irish Catholic background too so is really funny about 'body stuff'!! Any advice would be welcome!