Remember when Amethyst Star said this?

Matilda: I'm to move an entire wedding from tomorrow to today!

 

Amethyst Star: But nopony's asked me to organize anything since Twilight came to town.

 

Matilda: So you'll do it?

 

Amethyst Star: I used to be the best organizer in all of Ponyville. You bet I'll—

A user named "gato" from the Sonic Stadium Message Board caught this reference and dug up the archives, so credit goes to him:

See that vest and sleeve? Amethyst was the captain of the animal team, and it took place during the early half of season one, as Twilight was still getting accustomed into Ponyville. It's a little detail that only a few will catch, and even I didn't until he said it. To use that subtle reference in Slice of Life is extremely clever.