Jetpack Sharing/Sharedaddy CSS Not Loading on Site

I am using a custom theme and trying to implement sharing for facebook, twitter, Digg, and e-mail for my posts. Everything looks fine on the admin screen, but once applied it looks like the CSS isn’t applying to the list.

Buttons don’t show up, with the exception of Twitter and Facebook smart buttons. Likewise, the list is vertical, not horizontal.

I’ve checked through the CSS on the TwentyEleven theme (works) and my theme (does not work) so am assuming it’s something with my theme, but cannot figure out what could cause this.

Any help is greatly appreciated!