Once the piercing has healed, it's time for your little girl to choose some earrings. For most little girls, this is an exciting time that they've looked forward to for some time.
You could take her to the jewelry store or look online for her first pair of children's earrings. There will be much more for her to choose from online but ensure the photos are clear and the description includes measurements. The earrings need to be small and light and the rod not too long. There is a range of "backs" which are suitable. First, the butterfly backs which are made of the same material as the earrings, which may be gold, silver, surgical steel or titanium. All of these metals are safe but mostly you will find children's earrings in gold and silver.
Secondly, you might purchase a bunch of silicone backs. These are very safe, very light and once on the rod, they tend to "grip" the rod, ensuring the earring doesn't come out and become lost.
Thirdly, you could try safety screw backs. So named, because the rod is threaded as is the "back," ensuring the back can be screwed down tightly, to prevent it coming off and becoming lost. Some screw backs are covered so that the rod is inside the back, but some are not.
Screw backs are generally a little more expensive but may be worthwhile if your daughter "plays" with her earrings. This is generally how backs come off and the earring drops out and becomes lost.
Once your little girl gets used to her first pair of children's earrings, she will forget they are there except for when their friends notice them and compliment her. Or she looks in the mirror to brush her hair or her teeth, and sees her earrings and notices how pretty they are. This makes earrings one of the safest items of children's jewelry, because they are not getting played with when they are forgotten.
If her ears are pierced early, they become "part of her" and she's less likely to "play" with them and lose them.
Some nationalities have their baby's ears pierced at around 3 months. It is normal and expected and babies grow up not bothering with them. Though all little girls like jewelry and like to choose their own, eventually.