Katy Perry hid a secret message in her bizarre Met Gala outfit

Katy Perry's extravagant outfit turned heads at yesterday's Met Gala - but her bizarre gown apparently deserves a closer look.

Perry was a co-host at last night's event, and her red gown included a veil and a headpiece that appeared to say 'Witness'.

Some speculated the singer's headpiece revealed the title of her upcoming album.

Katy Perry wore the word 'Witness', thought to be the name of her new album. Photo / AP

Spin connected the word to the clues that Perry has been dropping in the lead up to her upcoming fourth LP, reporting that Witness was the title of a song demo that leaked a few months ago.

Did @KatyPerry just confirm the album name tho? #Witness was the first clue of the KP4 era, this will be the best twist & we called it! ❤️

— ✨ GEMMA PURRY ✨ (@GemmaPurry) May 1, 2017

Before the release of the single Bon Appetit last week, certain fans also received a flyer titled "temoin" - French for "witness".

Perry is yet to officially announce her follow up to 2013's Prism, but has so far released two singles including Chained to the Rhythm.