Elisabet TangWomen Pumps, Pointed Toe High Heel 4.7 inch/12cm Party Stiletto Heels Shoes, Silver, 8

I usually where a size 10 and ordered them but they are way too small should I get a 11 or 12 before purchasing again?

I’m a true size 8 but depending on the shoe style i go to a 8.5. the issue then becomes it’s too big in the back. should i get and 8 or 9?

Do they come in 1/2 sizes?

Are these shoes vegan?