That depends on how "fat" your ears are. Perhaps measure your most snug fitting plugs and order based on that...
Lobes: 5/8" lobes x2; 2g x1 (2nd hole); 4g x1 (3rd hole). 10g septum. 8g tongue. 12g nipple. 16g eyebrow. 2.5 year old dreads. Sternum microdermal (rejected).
"Have nothing in your house, except what you know to be useful or believe to be beautiful." -William Morris