The sad irony behind “DiDi Hollywood” is that while it’s a film about an actress reaching the top, it reps a once-illustrious helmer hitting the bottom. Predictable, confused and cliched, this second entry in Bigas Luna’s projected trilogy about Spanish women seeking success reveals nothing about either ambition or fame that celebrity mags don’t say every day, while its heroine provokes only viewer indifference. Pic has performed discreetly at home, but might benefit marginally offshore from Luna’s rep.