Saw this commercial for the Sims Korea with a popular Korean pop star (Hwasa), and the video shows fashion shows in the game with sims walking down a runway and striking a pose at the end. It talks ab...
I think it's just a normal advertising video. They are using all the assets that already exists in the game from what I can see and they don't use any custom animations...
But they are using more than 20 sims in the room, which is not possible without mods...