While not all of these turn out as planned (and some don't happen at all), we've witnessed the planning of all of these weddings:
- Meredith and Derek exchange vows on a sticky note, and later make it official at city hall.
- Izzie and Alex get married in a wedding that was originally meant for Meredith and Derek.
- Cristina and Burke are supposed to get married, but Burke leaves her at the altar!
- Cristina and Owen get married, and Cristina insists on wearing red the second time around.
- April and Matthew are moments away from being officially married, but Jackson intervenes at the last second.
- Callie and Arizona tie the knot after Callie recovers from her car accident.
- April and Jackson elope after April runs out on Matthew.
- George and Callie get married on a whim in Las Vegas.
- Teddy and Henry hastily get married, so Henry can have her insurance benefits.
- Miranda and Ben get married the same day Adele Webber passes away. Dr. Webber doesn't tell anyone, because he doesn't want to ruin the day.