Zhè zhǒng fàxíng zǎojiù guòqì le, xiànzài méi rén zhème jiǎn le.
This hairstyle went out of fashion long ago; nobody gets their hair cut like that any more.
Tips
mistakes
Don't confuse it with 过期 (guòqī), "expired": milk or a passport is 过期, while a star, a song or an internet meme that nobody cares about any more is 过气.
memory
气 here is the 气 of 人气, "popularity": a 过气 star is one whose popularity has passed.
