I haven't heard anything about how The Chipettes did in the Squeakquel, other than the lack of Simon and Jeanette moments... I hear it was most Alvin/Brittany.
My concern was how they would change their personalities to appeal to today's audiences, because I always liked Jeanette and Eleanor's personalities... Brittany's not so much, so I could care less about her... her "Single Ladies" dancing seemed somewhat suggestive, so it doesn't look like they changed her personality all that much... I'm just still surprised about her wearing a necktie because (NO OFFENSE TO ANYONE) Brittany was supposed to be the trendy one, and as far neckties go, women wearing neckties is a lesbian stereotype, so I figure Brittany wouldn't want that.
At the same time, I bet "fetish" fans were disappointed, because I've still shots of The Chipettes bare in the Squeakquel... I know a lot of fans wanted to see them naked, but that ain't what they were wanting, lol.
But my biggest question is this -- I remember reading an interview with Ross and Janice that as a nod to fans who grew up with them in the 80s, they were going to put a scene in the Squeakquel where Brittany, out of curiosity, tries on a pair of legwarmers, decides "nah", and tosses them aside... did that happen at all?