I am not a huge fan of the "if you've seen and worn it once, don't do it again" rule. There are certain things about the early 1990s that can be worked into a modern wardrobe, like Doc Martens. But the types of tiny pastel floral prints that Kelly wore in Beverly Hills 90210 will never again enter my wardrobe. They make me cringe and think that I would look like a desperate 30-something trying to look like a 13-year-old, even if I didn't. My instinct just says no.
As for the red star-print skirt, yes, it could look as if I raided my own pre-teenage wardrobe. But since my favourite style rule of all time is HAVE FUN WITH CLOTHES!, I decided to go with my first thought, the one I had at Salvation Army: I am in love with that pattern, and yes, I will wear it, childish or not.