How can you tell who's had a BA?

On a thread recently where people we're ask if they knew anyone who'd had a BA someone said they didn't but see a lot of women with them. Now I am a total boob watcher and feel like I've seen what I now think are a few people that have had it done. But is it just me having a possible BA on my mind all the time that makes me think it? Or is the girl in the gym who has great boobs but that don't seem to flatten when she lies on her back a fellow BA-er? Or the 40-something who maybe wears a great bra but has very nice round perky ones? Or how about the girl I saw who had great boobs in a strappy dress but they didn't quite wobble? 

What are the telltale signs?  I want mine to be as natural as possible but would be interested to know what gives the game away to someone that *knows*. 

And as a disclaimer, the one girl I know that definitely has had it done, I'd never have guessed in a million years!!!

I don't think you can tell alot tbh. mine look real! I actually love the fake look aswell, once I can wear bra im going to make mine look faker :p    (the top round part). Maybe the best way to know is if someone has pert massive boobs in comparison to the rest of their body, you could probably assume.. x

If you've had a good surgeon and not asked for a fake look, you shouldn't be able to tell at all. If I'm dressed, no one would have a clue about mine. I don't think there are specific tell tale signs really. When I'm perving, imm not looking for real or not, just if they look good or not! Most of the time I'm judging if their bra fits or not!

I can tell when it's obvious, like a skinny girl with huge round boobs. x

I would hope if you've gone for the natural look you cant. 
I'm having anatomical unders and have said looking natural is v.important to me, so hoping they do.

Only way I've noticed is when there's lots of upper pole fullness

I've noticed a few I suspect to having a BA  on holiday as they stay kind of pert/ keep their shape when lying down sun bathing ..... Makes me sound like a right perv...lol X

We're all boob pervs here Mirren!!

Oh my goodness I have become such a booby perv!!   
I do look for dodgy fitting bras too like you Charlii, It drives me mad when I see someone with a poorly fitted bra as there really is no need in this day and age to be fitted incorrectly.

If I hadn't told everyone , no one would have noticed cos I wore padded bras before anyway .