I have quite a bit of fat left to lose, but just wanted to note... basically, EVERYONE at a healthy body weight can sort of feel their ribcage. Ribs just... aren't made to have a cushion of fat on them. At a healthy BMI, you shouldn't be able to see your ribs if you're just standing in front of a mirror, but you definitely should feel vague outlines. I have a huge pad of tummy fat and a wide waist, by the way, so it's not that I'm just a pear with no fat on my upper body -- but even for apples, fat just doesn't like to stick on top of the ribcage.
The long and short of it? Don't worry, this is totally normal. It's like exposed elbows and collarbones