Hey hun, I’m having Dr Singh in August… you have nothing to worry about!!
He will measure your breasts first of all (topless of course) then he will give you a bra to try on the implants he has chosen… and let you put your top over it (or he’ll provide you with one) you can sit there for as long as you like with the implants in until you decide which one you’d prefer etc.
Honest hun, it’s not as bad as you think it’ll be. I hate my boyfriend seeing my breasts in daylight and I was nervous when I first went for a consultation (wasn’t with Dr Singh) but after a couple of professionals seeing them it feels like second nature!! Lol.
You’re in good hands I promise 
xx