what types of pizzas should i order?

Most people get plain cheese and pepperoni pizzas. It seems to satisfy the most because they are so basic. Because this is for your sister, I would also get her favorite toppings on one or two. After all, it is her special day. No matter what you get, remember that some people are opposed to consuming meat (even if the pepperoni is picked off). And there are few things more unbearable than a grumpy 14 year old vegetarian girl. :)

Oh, and 6 or 7 pizzas should be fine. If there is other food, you can get away with ordering less, but no less than 5.

Good luck!

I would plan 2 1/2 slices per girl. Probably around 5 large or jumbo pizzas.

I would stick to the basics:

Cheese only

Pepperoni

Make sure you order whatever kind of pizza is your sisters favorite. After all it is her birthday.

Order papa johns. They have the best pizza. Get six boxes of pizzas. And happy birthday to your sister :)

Get a skinny crust pizza with pineapple and onions. :] it incredibly is my well known. yet once you do in contrast to greens, bypass with a skinny crust with in basic terms cheese and/or pepperoni. there is not many toppings that at the instant are not vegetables, yet substitute the crust variety up.

Cheese only

Pepporni

Hamburger

Keep to the basics the are picky eaters one topping per pizza

I would suggest no more than 5 medium pizzas, this will ensure that there is enough for everyone i would do the normal cheese, beef, chicken, and pineapple

cant go wrong with pepperoni. It always gets eaten first at a pizza party.

Ask them? or get one of each type , if you know what your sister likes get mainly that one + a variety but if very unsure just get margeritas / ham n mushroom plain easy stuff .

I mean do they ilke pepperoni or are they very conservative eaters?

get one with cheese, two peperoni, one hawaiian, and just a couple other randoms