How do I invite this girl to a gig i'm performing at?

[john]

Basically i'm performing at this acoustic night at my school - i'll be playing guitar and singing. and I want to invite this girl. the only problem is she doesn't go to my school. she goes to a school just down the road from mine however. We're friends on facebook so we know of each other if u get me. I know that she has friends in my school as I've seen her with them. I just wondering how I can invite her to come, in the most casual, least creepiest way possible. Thanks

[Laura]

How bout you make it a public event on facebook and invite like all of your contacts or i mean your friends that go to your school plus her.
Or you can invite her friends that go to your school that you know are friends with her?
If you want to directly invite her though, how bout you ask her on chat? keeping in casual and stuff and definitely not making it feel like youre only just inviting her
you can say like come support my group or school or hang out if youre bored come with your friends??