Belle of the Ball

It was all a very hush-hush affair when Belle Hahn, daughter of the late billionaire art dealer Stephan Hahn, who died in 2011, celebrated her 35th birthday with a night on the tiles.

More than 120 guests gathered on the rooftop of the MOXI Museum for the top secret bash, with Belle thinking she was having dinner with her new beau, James Semick, and a few friends at the San Ysidro Ranch’s Stonehouse restaurant.

But Belle’s sister, Lily, had other plans afoot for the big day.

Belle, who was a co-chair of the Lotusland gala just 24 hours earlier, like her late father, who helped finance Hahn Hall at the Music Academy of the West, has become a popular local philanthropist.

As she stepped out of the elevator with her boyfriend, the surprise on her face was glowingly evident as she was greeted by the colorfully garbed guests, including mother Thomasina, Gretchen Lieff and Miles Hartfeld, Gwen Stauffer, Ricardo and Dinah Calderon, Merryl Brown, Scott Reed, Jon Bishop, Jennifer Smith Hale, Caroline Thompson, Mike Smith, and Ana Papakhian.

On the Market

The late British singer George Michael’s Santa Barbara mansion is up for sale for $5.995 million.

The modern 4,840 sq.ft. hexagonal shaped property, designed in 1985 by architect Cliff Hickman, a disciple of Frank Lloyd Wright, boasts five bedrooms and six bathrooms across two floors on 5.7 acres with sweeping Pacific and mountain views.

There’s also parking space for 25 cars.

The Mt. Calvary Road pad is being sold by Kirk Hodson of Compass.