The always fashionable (even hiding under a towel at the airport) Katy Perry stunned at a City of Hope event honoring a Clear Channel exec in Los Angeles yesterday (June 12), rocking the flapper look. She looked like she stepped out of the roaring ’20s in her dress, without sacrificing her signature style.

The ‘Wide Awake’ singer wore a blush-colored, lace-trimmed and  floor-length slip dress, which she accessorized with two strands of pearls, hair jewelry and finger waves! She also looks braless.

Perry, known for those ample, below-the-neck assets, remains daring with her style. While she looks absolutely gorgeous in throwback flapper chic, she is pushing it by going bra-free. She is a busty gal and requires support. If she keeps eschewing underthings, she is bound to have a nip slip sooner than later.

That said, we also love how she added her signature Perry punk edge to the look, thanks to her hair’s purple ends. Perry also performed at the event, rocking a bit more of a jeweled hippie look.

Katy Perry: So many looks, so little time.

See Video of Katy Perry’s Flapper Look