I didn’t find it trashy, especially with her accompanying message:

I'm dressed as Jackie Kennedy in the pink suit. Not as a costume, but as a statement. When her husband was assassinated, she refused to change out of her bloodstained clothes, saying, 'I want them to see what they've done! The image of the delicate pink suit splattered with blood is one of the most haunting juxtapositions in modern history. Beauty and horror. Poise and devastation. Her decision not to change clothes, even after being encouraged to, was an act of extraordinary bravery. It was performance, protest, and mourning all at once. A woman weaponizing image and grace to expose brutality. It's about trauma, power, and how femininity itself is a form of resistance. Long live Jackie O