You always throw the best parties
Pinkie.
Making friends is what you do, Pinkie.
Don't you wanna enjoy the partay?
Come on Twilight, Enjoy the party.
Derpy seems to be enjoying it.
Derpy is still in the background.
I just had to throw a party, ya know?
I don't think she wants to enjoy the party Pinkie, you'll get her next time.
Making friends is more important than studying...
That's hot sauce, you know that right Twi?
Follow the direction of Twilight Sparkle's horn...
Looks like Twilight can be like Derpy.
Pinkie Pie sure didn't have Twilight's reaction!
There's Derpy in the lower-right corner.
Derpy in the lower-right corner
Who are you ponies looking at?
Three Derpy clones in this scene
Most of the time you look happy
Derpy.
In the same spot as before
Even Derpy isn't happy with you two.
Derpy... well, being Derpy.
Derpy proud of herself at the Best Young Flyer competition
Derpy's eyes are normal when she spectates.
Derpy feeling the glorious raise of Rarity's wings.
Spectators watch as Rainbow Dash streaks downward to rescue the Wonderbolts and Rarity.
There are at least three Derpys (Derpies?) in this picture...
Derpy behind Rainbow´s crown.
Derpy smiles in the background.
Watching Scootaloo and the spot where she's going to land at the same time
Derpy, seems impressed by Scootaloo's moves.
(Click to view animation)
Derpy Derping in line... Or not... that's for Applejack to decide.
Derpy singing after Twilight's verse during "At The Gala."
Derpy at the bottom left corner, and another partially-obscured Derpy behind a pink-maned pony at the bottom right corner.
Standing outside the VIP section.
Derpy is a VIP member to the Wonderbolts.
Derping in the Grand Galloping Gala VIP section.