Breast implants?

Appearance and touch.

In clothing it's difficult to tell the difference. Nude they are easy to spot, especially if she's lying down. If she moves, and they don't, then they're fake.

If you're at the beach, implants don't float. Usually they stay put, where they are. Natural will float, and has more movement.

Most girls don't have fake boobs but it feels different and they are more firm and round

When they are too big and if the nipple is pointing to the sky, for sure fake. Most women don't need fake boobs, it's the attention they need. Some of these women should put a third boob on their forehead to really feel satisfied.

Yeah it's pretty easy to tell. Fake boobs look different and they move differently. They don't move like natural ones do. But it's not that big of a deal if they're real or fake as long as they are done right.

You can always tell when a girl a naked or if you touch them. But when she is clothed it depends on how big she got them or if they fit to her body.

They do look fake. They just look different and feel and move different.

I don't know about guys, but to girls do. It is completely obvious, sick and trashy.

I don't know if guys can tell- but I can. Typicaly if they are large and still perky. They are fake.