Per Yarndex...it lists as fingering weight. Seems about right for baby items. Sport weight is common for baby items too. It suggests a US 3 size needle but she went smaller, which is ok too.
Here's where I found the weight. Yarndex is awesome.. http://www.yarndex.com/yarn.cfm?yarn_id=1883
Very cute booties by the way!
eta: this is my 2000th post...how unceremonious!
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