What gauge size are Claire’s earrings?

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What gauge size are Claire’s earrings?Or what the pierce you with at Claire’s? Butterfly back earrings are usually 20 gauge, sometimes 22. BAF sells these titanium labrets that come in 20 gauge, but I was able to get the 18 gauge labrets in my 20+ year old gun-pierced 2nd lobes a couple weeks ago.