I had DD#1&2's ears pierced at 6 months old--DD#3 was done at 3 months old. As for the hoops, I waited a bit--DD#1 got a pair of 14k hoops for Christmas when she was three--we put them in and never had problems with them, but I was worried about hoops at a younger age!
I have the ladybug earrings that were posted--I loved them for DD#1!! Now I need to go and check out that site! DD#3 is still in her piercing studs
It has kinda been a tradition in our family that Nana buys the girls their "1st" pair of earrings for Christmas(but seeing as we just had DD#3's ears done last year right before, she help off on buying any new ones yet!)