Sure, she is a model (I've seen her on some magazines) and actually she really looks like Linda, but there are plenty of models who look like Linda just because she was one of the best models of the 90's.
If you read the end credits you'll see her name is Greta Cavazzoni.
With the mob of boys at the Groovy Smoothie seeking a night with her at the dance, Freddie decides that the best way to sort them out is with a speed-dating contest, where everybody sorts out boys that they think Carly would like.
Of course, Freddie uses this to do the opposite so he can go out with her someday, but has to settle for Magical Malika, who spends their date performing magic tricks at his expense.
The slopes tend to favor the beginner-intermediate with only 10% being rated black.