On Monday, Katy Perry sent a tweet to her 40 million + followers asking them to keep an eye out for the #PRISM semi. The semi-trailer wasn't that hard to miss as it traveled around Los Angeles announcing the title of her next album along with its release date.

Those traveling the LA streets and highways couldn't miss the rolling billboard because the announcement is scrolled out in six foot high black letters on a shiny golden background with Katy's new album title, Prism, and it will be released on October 22nd.

Once she sent out the tweet is wasn't long before her followers started uploading pics of it and tagging it with #PRISM. It even caught the attention of Adam Lambert who snapped a pic and uploaded it to his Twitter account too!

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Katy says LA isn't the only stop for the Prism trailer,

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