Looking for another old story

I'm looking for a story that had a guy moving from the British Isles to the US. He had a name that is male there, but female here (maybe Shannon?).

There's an issue with his luggage and he's stuck with a suitcase of female clothes (I think they are even close to his size).

He's got long hair and everyone in the new town (except the relative he'll be living with thinks he's a girl.

I *think* he's high school age as well.

It's *not* Texas Two-Step. I just re-read that because the synopsis seemed close.