Basically this sunday shes asked me to come with her for dinner with all of her friends. I havent met them before and if i am honest quite nervous about it.

Any tips?

I know they are clique, have a lot of inside jokes...etc

Charm them all but remember who you're with, some girls will test you others might try to knit pick you but don't let it phase you're just the cool "I get along with everyone type" guy.

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Suriyel - According to the Book of Enoch, Suriyel was one of the leaders of angels who lusted after the daughters of men.

Show them that the girl you're going with, is your girl. Keep the flirting with the others to a minimum, show dominance with the girl (not by being a dick -- show them that you are protecting her). Open doors for her, etc. Basically prove that you are a good boyfriend to her.

Entertain them all, but make your target the center of attention. Throw a little game the other girls' way but avoid kino with them. Remember that if you befriend the obstacles, you'll own the target. Remember all of those stupid questions you wanted to ask a girl back in your inexperienced days? Where ya from? What's your favorite movie? Ambitions? Hit them with those. By giving value to the members of the group, you'll raise your own value amongst the circle. If there people around who aren't part of your group (restaurant staff, door guys, random people in your proximity), be especially nice to them. Take interest in their days. Listen to what they have to say. I've found that in situations where you're in the company of mostly women, your value as a man is dependent on how well you treat people from who you don't think you can gain anything from.