I voted more than 20 pair.
I have 10 pairs of lace top thigh high stockings. 2 white, 3 black, 2 red with backseam, and 3 nude.
I have 6 pairs of black suspender hose (my goto hosiery). 4 pairs with solid welt; might have more unopened. 1 pair with lace suspenders, and 1 pair with lace waist.
Since October this year I’ve been bitten by the tights bug.
2 pairs of No Nonsense Great Shapes Cooling tights; lightest color 20 denier.
22 pairs of Secret Treasures sheer tights. 9 mocha, 6 cocoa, and 7 mystical rose(has stitched in roses). I hit 4 Wal-Marts in my area; they had them on clearance sale for 1 dollar/pack. I couldn’t pass any of these up.
I also recently bought 2 pairs of grey tights and 2 pairs of navy tights; higher than 20 denier but not opaque.