Other mistake: Season 1, Episode 1: "Hot Tub". Just before Toot starts her earthquaking Charleston, look at Spanky Ham in the background; for a few seconds, his eyebrows are missing.
Other mistake: Season 1 Episode 1 "Hot Tub" When the characters stand all together in one frame at the end of the introduction, zoom in on Princess Clara; here she definitely misses her eyebrows.
Dirty Pranking Number 2 - S1-E6
Other mistake: Season 1 Episode 6: "Dirty Pranking Number 2". When the pizza delivery man shows up at the police station, the receptionist says that they hadn't ordered twenty pizzas; but the pizza man is holding only eighteen boxes.
Dirty Pranking Number 2 - S1-E6
Other mistake: Season 1, Episode 6: "Dirty Pranking Number 2". When the King intends to take Clara home, there are secret service agents jogging alongside the carriage. But in the first scene where it is seen, the agent on the frontal left of the carriage looks like he's hitching a ride, since he isn't hopping. In a later close-up of the King inside the carriage, an agent can be seen outside hopping up and down as he keeps jogging.
Answer: She was in the show 90210, so I'm guessing it's a reference to something she did in the show?