Isnt this cute?

I came across this while I was on tumblr:

I have a similar shirt that I got from H&M a while back. It has an open back like that also and then it dawned on me... I could wear those strappy back bras from Victoria's Secret (Which they sadly don't sell anymore). Like this one:

I always wondered what the purpose of that strappy back was.. I always thought it was just to look pretty when I looked in the mirror lol!