ok lovelies, I need some help. Im looking for some shoes online and now are so confused by it all.

Like clothing, I flucate in shoe sizes but have measured my foot, and a similar pair of shoes I already own.

Now the confusing part, found what I like so far but its an US site. They have an australian size 9 as an US = 11. foot 26.7cm
BUT
my sneakers have a comparison label which said they are US size 9 26cm

so i really dont know what size, any suggestions?