Prepare for breast feeding, but do I need to get the bottles and what kind?

Lizzy • Family always comes first~~~~~~
I'm preparing for the hospital bag and new born baby stuff for my two little boys, 2 months to go but I would like to have everything ready before that~ never know if there is any surprise...
Could anyone advise me for the bottle? I'm going to breast feed as much as possible, if it is not enough I will get formula as well. I received the medela breast pump as gift but only couple containers with the set. I am not sure if I will need bottles and what kind I should get.
Thanks a lot mummys and mummys to be~ 

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