Hi OP.
I have to say I agree with everyone saying don't do it. I'm in a mixed marriage and it's normal in my DH's culture for baby girls' ears to be pierced and we received a few pairs of earrings as gifts. I was seen a strange for not wanting it and family said it'd make our DD look like a boy. It's also normal for baby boys to be circumcised for religious/just cultural reasons even if not religious. Both caused arguments for us.
A practical thing to consider is babies often pull their ears as mine both did. Imagine them ripping one out.
There's also the risk of infection regardless. Why would we introduce a risk, however small, when we spend so much time worrying about them having other infections? And for something so pointless as having their ears pierced? I also don't understand it when so many parents dread taking their babies for their all important vaccines because of the pain. I still remember the pain form having my ears pierced and I decided to go so was much older.
Babies are beautiful as they are.
Earrings are not really a thing as much anymore. See any red carpet. I've also been to a few weddings recently where brides went without earrings despite having pierced ears. The holes in the lobes don't look very nice.
Inportantly, she can't give her consent yet. We agreed that we will take our DD when she's old enough to have asked - and for a long time. We haven't decided on an age yet however but we still wouldn't allow it when still quite young.
I must also admit I saw a young baby with pierced ears the other day and I was cringing inside. She seemed so young and I thought it looked tacky if I'm being honest.