John Mayer and girlfriend Katy Perry have to be one of the sexiest couples around.

The rock 'n roll twosome left The Little Door restaurant in LA after sharing a romantic dinner together. Too bad the "Fireworks" songstress was acting shy and covering that beautiful face with her hair.

Looks like Katy is going to be John's "Queen of California" ... at least for another week. Sounds royally hot!

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