Dear Jenna V.
Thank you for your message.
You can choose the shipping method you need.If you want to received your order earlier, you can choose expedired shipping.
This is the link about shipping: http://www.dresslily.com/m-article-id-39.htm
And for the size, we offer you the measurements exactly like the first size chart under product information. I recommend referring to the specific measurements in the product information and compared with yours. For your reference, please note that 1 inch= 2.54cm so you can convert the size accurately.
You can contact us if you have any issues.
Here is the link: http://support.dresslily.com/

Yours sincerely,
Dresslily Customer Service