How Did Supergirl Get Pierced Ears?

Daughter has started watching the Supergirl series. Late Sunday night she texted me:

Serious question. .. how did supergirl get pierced ears?

Me: On Krypton

She: Lol. Ok. Right

Next morning:

Me: Orrr... The comics used to show Superman "shaving" using a hand-held mirror and his super heat vision. (Must've smelled like burning steel wool.) Maybe SGirl did something like that. Ow!

She: Ah, the old in home super vision ear pierce!

(Hope I properly closed all those italicans.)