The night before Hearth’s Warming, with Nyx in Canterlot for a week, Sunset Shimmer challenged Twilight Sparkle and Trixie Lulamoon to a wine drinking contest. She mostly wanted to see the newest princess of Equestria in an embarrassing state so she could make fun on her. What she did not expect, was that Twilight had, in fact, more alcohol tolerance than her.  
After a few bottles, Sunset felt like everything was spinning, and had to lay in the floor before fainting. She never noticed when Trixie - who didn’t drink more than a couple of cups - put her hat on her.  
Trixie wanted to return to her wagon to get some sleep, but Twilight, a little bit drunk, didn’t let her reach the front door, and was telling her of some - not suitable for work - books she has been reading the last months. Trixie felt really awkward, and while nodding to everything Twilight said, was also slowly trying to approach the door and run to the safety of her own home.  
Trixie didn’t notice that she forgot her hat until the next day. Twilight went to sleep in the moment she realized she was talking to a wooden sculpture. Sunset woke up the next morning with all her muscles sore for sleeping in the floor.