Looking for an old story

Hi! I'm working on a sticky block and somehow found myself searching through my memory for a story I once read, but have lost somewhere... I think it's in my amygdala, but I could be lost even there...

The story was about a teenaged boy - trans, at it turns out (!) - hoodwinked into a girl's identity by his cousins, who finds herself a TV (sic) weather girl, and then a reporter, and finally a news anchor, all in one summer.

Does anyone remember this chestnut? Your help would be appreciated.
:-)
Michelle