Sensations – July 29, 2007

Nicky Hilton and David Katzenberg, dining Saturday at Fix restaurant for the second night in a row inside the Bellagio.

Molly Shea and Holly Huddleston, better known as the "Olly Girls" from the E! hit TV show, "Sunset Tan," dining Friday at Stack restaurant (The Mirage) before making the short walk to Jet nightclub to host the evening's festivities.

Socialite Kim Kardashian, illusionist Criss Angel, actress/singer Haylie Duff, rapper Mike Jones, Lynne Spears (Britney Spears' mother), and MTV reality TV stars Brody Jenner and Frankie Delgado, partying Saturday at Pure nightclub (Caesars Palace).

Lynne Spears and daughter Jamie Lynn Spears (Britney Spears' younger sister), dining Saturday at Social House restaurant (Treasure Island). Also dining at Social House, former United States/world figure skating champion and two-time Olympic medalist Michelle Kwan ...

Playboy model and American Curves cover girl Lisa Mackay, celebrating her 24th birthday Saturday at Tangerine nightclub (Treasure Island).

Actress Jaime Pressly, lounging Saturday at Venus Pool Club (Caesars Palace).

Socialite Kim Kardashian, singer/actress Haylie Duff, MTV reality TV stars Brody Jenner and Frankie Delgado, actor Jonathan Schaech, actor Shane West, actor Roger Cross and actress January Jones, attending Saturday's Stuff magazine party at Tao Beach (The Venetian).

The stars decided to keep the party going at TAO later in the evening, with the group having dinner at Tao Asian Bistro. After dinner, the group headed upstairs to Tao nightclub to party.

Also spotted at Tao: model Joanna Krupa, professional BMX biker T.J. Lavin, actress Alana Curry and VH1's "Celebrity Fit Club" host Ant.

Comdeian Artie Lange, relaxing in a cabana Saturday at the Hard Rock Hotel pool.

Haylie Duff and a girlfriend, enjoying spa treatments Saturday at the Rock Spa (Hard Rock Hotel).

The cast of ABC's hit show, "October Road," celebrating the wrap of a successful first season with a 30-person dinner Friday at Simon Kitchen & Bar inside the Hard Rock Hotel. Later, the young Hollywood cast members including; Laura Prepon (with boyfriend, Chris Masterson), Bryan Greenberg and Odette Yustman headed to Body English where they were surprised with a cake topped with sparklers to congratulate them. ... Also at Body English on Friday: singer/actress Haylie Duff.

At pop star Fergie's concert Saturday at the Pearl inside the Palms: tennis star Serena Williams, actress Camille Guaty, David Katzenberg, actor Josh Meyers, singer Macy Gray, actor Romany Malco, actress Sarah Chalke, actor Scott Speedman, actor Justin Long, actor Donald Faison and girlfriend Cacee Cobb (Jessica Simpson's former personal assistant) and actor Mario Lopez.

MTV reality TV star Brody Jenner, checking out the action early Sunday from the VIP section at Spearmint Rhino gentlemen's club.