Here's AnnaSophia Robb carrying another contemporary (though 80s-tastic) bag while filming scenes from The Carrie Diaries on location in NYC. In this case, it's a hot pink Diane von Furstenberg Flirty Lips Mini Crossbody Bag. Last time, it was a bag that is absolutely notorious amongst S&TC fans - the Fendi Baguette. The Carrie Diaries is, of course, an S&TC prequel now in its second season on The CW. You can get AnnaSophia's/Carrie's bag for $245 at Saks.
We can forgive little wardrobe inaccuracies on the set of The Carrie Diaries, of course, because the show's costuming department is obviously pretty fab. The 1980s have become one huge, puffy-sleeved fashion cliche in the last 20 plus years, and being able to make that decade look fresh and appealing (fashion-wise, at least) to a modern audience at this point in the game is truly a feat.