Esto funciona para mí:
SELECT type, size, COUNT(*) AS rows
FROM clothes
WHERE size = 'large'
GROUP BY type
LIMIT 0, 5
Resultados en:
type size rows
------------------------
Circle Large 4
Oval Large 1
Square Large 1
Star Large 1
Triangle Large 2
LIMIT debe aplicarse después de GROUP BY, por lo que no entiendo el problema.