I think since plastic surgery is safe and viable option for anyone to change their appearance, why should anyone have a problem with it? But should we disclose it? Well, celebrities definitely should, since they are public figures, and if they don't volunteer that information, the tabloids will find out anyway.I had a family member who had a "secret" tummy tuck but had to disclose it to her mother once she got quite sick during recovery and had to disclose it to her sisters and mother so that they could watch the kids while she recovered.
A celebrity that definitely seems to have had breast implants but has yet to disclose it is Kellie Pickler. What do you think looking at this picture? Can this cleavage be from a pushup bra or are these just natural breasts?

