Lily: I try to tell 200 time but not leason and talk none stop for 2 hour!  
Discord:…..Oh my bad…let me take home!  
Lily: No , can you take me to Rarity, me and her we most work on the New for Princess Twilight..Please?  
Discord: Oh of course!  
teleport from Rarity Home.  
Discord: Here we are..OH Fluttershy!  
Fluttershy: Why are with Lily lace?!  
Rarity: I want to know to!  
after explening.  
Fluttershy: oh my!  
Discord: I am sorry!  
Lily: Is ok but next time if you want a tea party with me, i like be warning first!  
Discord: He he he sorry, well not everypony and ajoy my chaos realm!  
Lily: Oh but is a nice place, your home is look sample but i am sure is chaotic like you!  
Fluttershy: Yes is chaotic hi hi hi hi..Let go discord do our tea party!  
both is gone.  
Lily:..You know i got some idea for new dress i will love to work on after we are finish this dress for Princess Twilight!

@poecillia-gracilis19 
Oh i forgot about her. It’s the valley girl pony.

@Background Pony #6FB7 
What OC? Lily Lace is a canon character.

For a moment i thought it’s some clever convention poster with Discord and Andrea Libman OC but it seem is just a random OC.