bitty

1. ADJ If you describe someone or something as a little bitty person or thing, you are emphasizing that they are very small. (人)矮小的; (物)很小的[美國(guó)英語(yǔ)] [非正式] [ADJ n]

She's just a little bitty wisp of a girl. 她衹是一個(gè)非常嬌弱的小女孩。