Lexi Andrews is Archie Andrews' little sister 'It's 11 months Arch' 'You're still the youngest' The two have been extremely close their whole lives, they've told each other everything. At least they thought they did, of course they have their secrets, as does everyone in Riverdale. Archie is always looking out for Lexi, making sure she's okay. Especially since Fred Andrews, their father, got shot. But he can't keep her away from everything. • • NOTE:Not everything in this book will be the same as the show.