There is a Padded Bra Top for sale on Amazon which states that it is 'one size' but a lot of the reviews state that this clearly isn't the case.
Amongst the annoyed reviews of those that found the top too small was a mother named Christy who left the best review imaginable.
"My 16 y.o. daughter bought this thing. It is ridiculously small and I probably couldn’t legally post a picture of what it looks like if she attempts to wear it. But, so you can see… here is a picture of our cat wearing it. To be fair, it does cover all of the cats nipples, however, she hates the weave. In summary, do not buy this, even for your cat."
This review just happens to be the most helpful out of the 77 other reviews and when you take a look at the picture below you can see why.
She really did dress the cat up in the top to prove just how small it is. As you can see, she really does have a point. You can buy yourself your very own cat jumper here.