Is this in picture a top like outer? or under wear? if outer should I let my 9 year old (long before puberty) wear her friend's one as outer?

my question refers to this for adult

Is this in picture a top like outer? or under wear? if outer should I let my 9 year old (long before puberty) wear her friends one as outer?

and this same style for 9 year old. i stalled her by saying "try it on" so she tried it on and wanted to wear it outdoors now summer break? what would you say/ do if you were the father.

would you buy this for a nine year old girl. really, they make them her size.

Is this in picture a top like outer? or under wear? if outer should I let my 9 year old (long before puberty) wear her friend's one as outer?
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