Good dialogue for teenage characters
Greetings everyone.
I am working on a novel where two of the main characters are teenage girls. However, I stumble where I'm supposed to write dialogue. How do I do this?
Now I know this is going to sound weird, but I barely spoke to anyone when I was a teenager, and I wonder how much of the conversation I have now resembles what teenage girls would talk about (I'm 29 years old and hang around with burly Guinness-drinking graduate students, and girls who like to DIY).
Books about teenage psychology are only vaguely helpful.
Concerning the novel, it is a literary one, not chick-lit, and it is not aimed at teenagers. The main character is an outcast controlled by her manipulative father, and just doesn`t get teenage girl magazines. The other is popular, smart and sporty, but I do not want her to be the cheerleading cliché.
What is your advice for writing teenage girl dialogue that does not sound like two Barbie dolls shopping? Especially, what would differentiate teenage dialogue from adult dialogue? One thing I know is that (most?) teenagers do not get irony.
Thank you for your help,
Zoe