Viewers praised it for its diverse cast, progressive themes, and the catchy covers.

Instead of doing something new with its diverse cast, they’d be cast into the same stereotypes.

The show also poorly handled grave mental health issues like Marley’s eating disorder and Brittany’s breakdown.

Britney Spears at Glaad Awards

Given this, it’s hard to believe that Spears made a guest appearance on the show.

Spearstweetedabout her time on the show saying, “Had so much fun on set today.

My new BFF’s .

Britney Spears performing in London

-Britney” with a picture of her with show-runner Ryan Murphy and Brittany actress Heather Morisson.

Spears would alsotweether support throughout the show saying, “Awww Heather Morris is sooo cute!

She was so fun to work with and was really sweet in person.”

A woman holding up a Free Britney sign

The stars agreed that while Spears was extremely nice, there was something off about her.

“[She was a] little .

if you will in the nicest way possible .

McHale, too, recalled a similar instance that happened as Spears was filming the episode.

The episode was shot in 2010, two years after her conservatorship began.

Although the conservatorship was initially meant to be temporary, the court extended it indefinitely in October 2008.