Rachel Bilson wore a navy silk dress by Ferragamo with a sheer black bodysuit (compete with gloves) at the Ferragamo show in Milan. The next day, she appeared in Ferragamo again at the amFAR Charity Gala. WireImage (2) Hilary Swank in a simple LBD at the Triumph Inspiration Awards 2009 in Milan. Vittorio Zunino Celotto / Getty Images Singer Lady Gaga wore a set of fluffy Marc Jacobs bloomers and vest at the Heartbeats by Lady Gaga event on September 30 in New York. Peter Kramer / AP Photo Victoria Beckham wore a structural black dress at the David Beckham and James Bond Adidas Originals Launch Party in Los Angeles. Jennifer Graylock / AP Photo Mary J. Blige wore a one-of-a-kind crystal embroidered black top with silver and green emerald detailing at the Gucci show in Milan. Venturelli, WireImage / Getty Images Daisy Lowe wore red Dolce & Gabbana hot pants and fur at the Dolce & Gabbana show in Milan. Venturelli, WireImage / Getty Images (2) Mad Men actress January Jones wore a black Herve Leger dress to meet with John McCain on Capitol Hill to promote the Shark Conservation Act. Harry Hamburg / AP Photo Linda Evangelista wore a full-length velvet skirt and a fur stole at the amFAR gala in Milan. Chris Ashford, Camera Press / Retna Madonna wore a black Dolce & Gabbana stretch dress on Late Show with David Letterman on September 30, and Courtney Cox wore silver Riser Goodwyn on air with Jimmy Kimmel on September 23. Mitch Haddad / ABC via Getty Images Kristen Cavallari wore a Topshop skirt and Brian Atwood heels to a Gen Art event in West Hollywood. Jordan Strauss, WireImage / Getty Images Janet Jackson wore low-cut Versace to the Versace show at Milan Fashion Week. Venturelli, WireImage / Getty Images Carine Roitfeld in strappy sandals at the Missoni show during Milan Fashion Week. Vittorio Zunino Celotto / Getty Images Actress Kerry Washington poses in a sheer Catherine Malandrino top at the San Sebastian Film Festival in Spain. Carlos Alvarez / Getty Images Sarah Jessica Parker wore a structural Balmain tuxedo jacket with angular shoulders to Barbra Streisand's performance of Love Is the Answer at the Village Vanguard in New York. Kevin Mazur, WireImage / Getty Images