Probably around 10 or 11 years old I would occasionally slip on my Moms heels. But as she wore a very small size 5 1/2 US, I didn’t fit into those very long. In my mid teens I’m embarrassed to admit that I pilfered a pair of heels that belonged to a classmates mom that wore a much larger size. While heels were likely no more than 2.5 inches, I did enjoy them. I think the first pair I purchased was from Thom McAn, a brown pump with a slightly thicker than stiletto heel back in maybe 1968 or 1969, the only heel they had in the store in size 10.
I wish I had all of the shoes I’ve bought through the 50 years since, though maybe having the money spent instead would be better! I’ve always had storage issues so I rarely kept/keep what I buy very long. Typically donate those I part with to places like Salvation Army or churches, so people do get some bargains on nice, minimally worn heels in size 11 or 12. Hopefully someone then gets good use out of them!