She could probably fit in a youth size jersey. I would be an adult small, but those are hard to find so I always get a youth large (for jerseys). I bought one a few weeks ago from ebay for less than $20 shipped.
That's not a good price for the CHI. Folica.com always has them for less (and they are legit). An original CHI is $69.99 with free shipping on there right now.
Arnold, MO has candy at 50% off still (scanned to make sure) so I didn't buy any. The TomTom GPS was $139.99, and they only had 3 out (locked in the case).
When I type "nfl polo" (without the "") in the search box, it pulls up the $60 ones along with a few $30 ones. The $30 ones I see are Lions (Small, XL), Chiefs (Small), Titans (Small), and Jaguars (Large, XL).