Stuck with Rosie's shoes (Styling Star)

As the title says, I can't seem to get any shoes that would let me advance with Rosie's story. Like, I need girly trainers, right? But I never seem to find any to buy in the first place! Every day I go to Marzipan Sky and nothing, no trainers. Also, the one time I actually got trainers from there they went over Rosie's limit, so that didn't work out. I've been also trying some other's stores that might have something girly, but no luck so far. Any ideas?