Ben Harper and David Arquette

The two celebrity pals have created a new line, called Propr (corr), and they're busy painting and decorating an empty storefront in Venice, California so the place is ready to open on 2 July (09).

Arquette urges fans and star spotters to visit the Abbot-Kinney address - because it will only be there for three months.

He says, "I'll be there."

Source: WENN