8 pm: Pop Music

Lauryn Hill’s first solo tour earlier this year extended the hip-hop diva’s rule from records to the stage, and now she’s taking it from mid-size theaters to arena level.

* Lauryn Hill, with Busta Rhymes, Arrowhead Pond, 2695 E. Katella Ave., Anaheim. 8 p.m. $55 and $65. (714) 704-2500.

8 pm: Theater

Petula Clark stars as the reclusive Norma Desmond in “Sunset Boulevard,” Andrew Lloyd Webber’s musical about a legendary silent film star and a struggling young screenwriter based on the classic 1950 Billy Wilder movie.

* “Sunset Boulevard,” Orange County Performing Arts Center, 600 Town Center Drive, Costa Mesa. Today and Friday, 8 p.m.; Saturday, 2 and 8 p.m.; Sunday, 2 and 7:30 p.m.; ends Sunday. $21 to $52.50. (213) 365-3500; (714) 740-7878. Also at San Diego Civic Theater. Tuesday through Aug. 1. (619) 570-1100; at Pantages Theatre, Oct. 5-10. (213) 365-3500.

all day: Racing

And they’re off! Again! The 60th season of horse racing at Del Mar begins today and the ponies will keep running until Sept. 8. Be sure to wear a hat on opening day--not just to keep the sun off your head but to enter the “One and Only Truly Fabulous Hats Contest.” There’s more than just gambling to lure you, too: jazz every Wednesday, family fun days each weekend, and regular handicapping seminars.

* Opening Day at Del Mar, at Jimmy Durante Boulevard and Via de la Valle, Del Mar. Gates open at noon, first post at 2 p.m. $3; seniors, $1; ages 17 and under, free with adult admission. (619) 755-1141.

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FREEBIE:

“Nadar/Warhol: Paris/New York” explores each artist’s take on celebrity at the Getty Center, 1200 Getty Center Drive, Brentwood. Reservations required. (310) 440-7300.