09/26/2013 11:15 EDT

Katy Perry's Plaid Dress Makes The Perfect Halloween 2013 Costume (PHOTO)

Did Katy Perry recently watch Britney Spears' "Hit Me Baby (One More Time)" or does she just like dressing up like a sexy school girl?

The "Roar" singer did her best '90s throwback (and tipped her hat to the burgeoning fall 2013 trend) in a plaid Alice & Olivia skirt, matching jacket and knee-high black socks at the launch of her new fragrance Killer Queen in Berlin, Germany on Wednesday.

This isn't the first time John Mayer's love interest has channeled the '90s; Russell Brand's ex sported a red crushed velvet dress back in August which gave us serious "Clueless" vibes.

But we're not trying to take shots at Katy's outfit; in fact, the 28-year-old's ensemble is the perfect Halloween costume idea for 2013.

What do you think of Katy's plaid look?

The Katy we know and love:

Photo gallery Katy Perry's Style Evolution See Gallery