Steven Tyler motorcycle denim helmet sunset marquis Steven Tyler motorcycle denim helmet sunset marquis

Steven Tyler knows how to make an entrance!

The American Idol judge arrived at the Sunset Marquis on a custom green motorcycle. Once a rock star ... always a rock star.

Tyler, 63, got engaged last December to his 38-year-old girlfriend Erin Brady. The two will reportedly tie the knot in Hawaii or Thailand later this year. This will be the Aerosmith frontman's third marriage.

We have a feeling the fancy bike will stay here in LA.