Nicole Kidman and Sandra Bullock Surprise Fans at ‘Practical Magic’ Screening in Hollywood Forever Cemetery for L.A.’s Cinespia

Sandra Bullock and Nicole Kidman made a surprise appearance at a screening of “Practical Magic” on Saturday night in L.A. Attendees came to the place, the Hollywood Forever Cemetery, for magic — and many, many Midnight Margaritas — but few expected an appearance by the Owens sisters themselves to introduce the 1998 cult classic. “Thank…