First, there was "Donna Martin graduates!"
Now, 90210 will attempt to outdo one of the major moments in the original show's history, as the remade series airs its prom episoe this week. Might Adrianna's water breaking at the event overshadow Donna's classic, drunken state?
Tune in Tuesday night to find out!
In the meantime, click on the photos below for an early look at the episode titled "Zero Tolerance."