Billi,
If your earrings are big (hoops or long chandeliers), the general rule is to skip on the necklace. If your earrings are like tops/studs....then you can wear a necklace with it.
Since it's a tea party....I think that nice silver chandelier earrings would look lovely and sophisticated. And you can skip on the necklace. And just wear a bracelet/or stylish ring.
i think chandellier will be too flashy. im trying to keep the jewels simple cuz i'll be wearing hair pin too so i dont wat everything to compete u knw......