Welcome to the jungle! Cat Deeley wore a sequined dress emblazoned with an image of a leopard and sky-high gladiator sandals for the 100th episode of "So You Think You Can Dance."FOX/Kelsey McNeal - Friday, July, 24, 2009, 10:24 PM

Cat Deeley wore a Yigal Azrouel dress she bought at Greta Luxe paired with classic Jimmy Choo shoes and earrings from Issa for the Season 5 "So You Think You Can Dance" Top 10 performance show.FOX/Mathieu Young - Friday, July, 24, 2009, 10:24 PM

Cat Deeley wore a sleek white Yves Saint Laurent "le smoking" suit to keep with the theme of the results night's group number with the Top 18 "So You Think You Can Dance" contestants.FOX/Mathieu Young - Friday, July, 24, 2009, 10:24 PM

When two of the final 10 dancers were cut on Season 5 of "So You Think You Can Dance," Cat Deeley sparkled in a Matthew Williamson sequined sheath dress, a pair of futuristic Sergio Rossi heels, and vintage bracelets.FOX/Mathieu Young - Friday, July, 17, 2009, 5:17 PM

Cat Deeley was perhaps inspired by Cleopatra when she announced "So You Think You Can Dance" Season 5's Top 10 because her retro outfit consisted of a vintage dress, gigantic Melinda Maria earrings, and golden Sergio Rossi heels.FOX/Mathieu Young - Thursday, July, 16, 2009, 7:16 AM

Cat Deeley wore a fitted black dress by John Galliano for Dior for the Top 12 performance show of "So You Think You Can Dance" Season 5. The stylish host accessorized the sophisticated look with vintage bracelets, a vintage broach in her hair, and bejeweled T-strap sandals by Sergio Rossi.FOX/Mathieu Young - Friday, July, 24, 2009, 8:24 AM

Cat Deeley paired a dress from Zara with a vintage Chloe belt, simple black Louboutins and bracelets by Mulberry and Lanvin when the Season 5 "So You Think You Can Dance" contestant pool was narrowed from 14 to 12.FOX/Kelsey McNeal - Friday, July, 24, 2009, 8:24 AM

For the Top 14 performance show of Season 5 of "So You Think You Can Dance," Cat Deeley pulled off a Sarah Jessica Parker-inspired outfit by cinching her hot pink DVF dress with a studded belt from Temperley London and Sonya Rykiel.FOX/Kelsey McNeal - Friday, July, 24, 2009, 8:24 AM

Cat Deeley channeled '70s style when she wore a palm tree-print jumpsuit when she had to send two of the Top 16 dancers home on Season 5 of "So You Think You Can Dance."FOX/Mathieu Young - Friday, July, 24, 2009, 8:24 AM

On the Top 18 episode of Season 5 of "So You Think You Can Dance," Cat Deeley wore a vintage one-shoulder, ruffle hem dress. She accessorized the bright red dress with a pair of equally crimson Gina sandals and TopShop hoop earrings.FOX/Mathieu Young - Friday, July, 24, 2009, 8:24 AM

Cat Deeley looked lovely in a pale orange Alice + Olivia dress, which she paired with Sergio Rossi heels, Melinda Maria bracelets and vintage Indian earrings, during the Top 16 performances of Season 5 of "So You Think You Can Dance."FOX/Mathieu Young - Friday, July, 24, 2009, 8:24 AM

Cat Deeley stayed true to her UK roots, showing off her gorgeous gams in a gem and sequin-embellished tunic from British label Temperley London and a pair of T-strap Louboutins when she introduced the Top 20 contestants on Season 5 of "So You Think You Can Dance."FOX/Mathieu Young - Friday, July, 24, 2009, 8:24 AM

During first results show of Season 5 of "So You Think You Can Dance," Cat Deeley amped up a simple strapless dress from French Connection with Roberto Cavalli heels, Melinda Maria earrings, and stacked bangle bracelets.FOX/Mathieu Young - Friday, July, 24, 2009, 8:24 AM

Cat Deeley arrives at Montblanc "Signature for Good" Charity Gala at Paramount Studios on February 20, 2009 in Los Angeles, California. Jean Baptiste Lacroix/WireImage.com - Friday, May, 29, 2009, 8:29 PM

Host Cat Deeley arrives at "So You Think You Can Dance" - Off at the Nokia Theatre LA Live on May 18, 2009 in Los Angeles, California. Dr. Billy Ingram/WireImage.com - Friday, May, 29, 2009, 8:29 PM

TV personality Cat Deeley arrives at the American Idol Top 13 Party held at AREA on March 5, 2009 in Los Angeles, California. Kevin Winter/Getty Images - Friday, May, 29, 2009, 8:29 PM

Actress Cat Deeley arrives at the "Vanity Fair Portraits: Photographs 1913-2008" Exhibit Grand Opening at LACMA on October 21, 2008 in Los Angeles, California. Gregg DeGuire/WireImage.com - Friday, May, 29, 2009, 8:29 PM

Cat Deeley attends the 6th Annual New Yorkers For Children Spring Dinner Dance "New Year's in April: A Fool's Fete" at the Mandarin Oriental on April 15, 2009 in New York City. Andrew H. Walker/Getty Images - Friday, May, 29, 2009, 8:29 PM

Cat Deeley arrives at the American Idol Season 7 Grand Finale on May 21, 2008 at the Nokia Theatre in Los Angeles, California.Steve Granitz/WireImage.com - Wednesday, June, 4, 2008, 7:4 PM

Cat Deeley attends the launch party for BritWeek held at the British Consul General's Official Residence on April 24, 2008 in Los Angeles, California.Neilson Barnard/Getty Images - Wednesday, June, 4, 2008, 7:4 PM

Cat Deeley and Christopher Bailey attend the Metropolitan Museum of Art Costume Institute Gala "Superheroes: Fashion And Fantasy" at the Metropolitan Museum of Art on May 5, 2008 in New York City.Dimitrios Kambouris/WireImage.com - Wednesday, June, 4, 2008, 7:4 PM

Cat Deeley attends the BAFTA/LA British Comedy Awards Presented by British Airways on May 1, 2008 in Beverly Hills, California.Amy Graves/WireImage.com - Wednesday, June, 4, 2008, 7:4 PM

Cat Deeley at 944 Magazine's "London Calling" Opening at Steve Shaw's Art Gallery on March 10, 2008 in Venice, California.Jordan Strauss/WireImage.com - Wednesday, June, 4, 2008, 7:4 PM

Cat Deeley attends the 2008 FOX UpFront - After Party at Wollman Rink, Central Park on May 15, 2008 in New York City.Jim Spellman/WireImage.com - Wednesday, June, 4, 2008, 7:4 PM