Well, it's because… she simply wasn't there!
In fact, the Goop creator hasn't attended the fashion-forward event since 2013!
So what was The Royal Tenenbaums star doing while her A-list colleagues were glamming it up in New York?!
The 42-year-old was home with her daughter Apple Martin!
On Tuesday, the actress posted the (above) pic on Instagram of her bundle of joy with the caption:
"This was the red carpet in my house last night"
Yowza! Her baby is all grown up! So cute!
Ever since her last Met Gala appearance, the Los Angeles native has been very vocal about her distaste for the soirée.
Shortly after attending the fair, she told Australian radio hosts Kyle and Jackie O:
"Do you want me to be honest? It sucked…. You always think, "Oh my god, it's gonna be so glamorous and amazing and you're going to see all these people," and then you get there and it's so hot and it's so crowded and everyone's pushing you."'
Damn girl! Tell us how you really feel!
While we would've loved to see Gwyneth walk down the red carpet in couture, we totally understand that family comes first!