Group of stars round California primarily having renown in Hollywood (15)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Group of stars round California primarily having renown in Hollywood GLOBULAR (=round, spherical) + C <alifornia> (“primarily” means first letter only) + LUSTER (=renown, distinction; “in Hollywood” implies US spelling); a globular cluster is a spheroidal conglomeration of stars that is bound together by gravity