Rihanna is back - on the red carpet, at least. The pop singer arrived Monday at the annual Costume Institute of The Metropolitan Museum gala in New York. It was her first such appearance since then-boyfriend Chris Brown allegedly beat her in February. Rihanna arrived in black - including both the SUV and her Dolce and Gabbana suit and bow tie. She was the last celebrity to walk the carpet and did not speak with press. Unfortunately her shiny tuxedo Dolce and Gabbana suit and bow tie with huge puff-sleeved shoulders was not one of the platinum-selling artists style hits. The beautiful Bajan born singer, 21, covered up her in the unflattering black boxy suit, no doubt disappointing her many fans. She accessorised her look with a bouffant blonde streaked hairdo, leather gloves and a Mona Lisa smile. Rihanna who has just returned from holidaying in Barbados, was the last celebrity to walk the carpet and did not speak with press. Vogue editor Anna Wintour once again hosted the gala, which this year served as the kickoff to The Model as Muse: Embodying Fashion exhibit. Kate Moss co-chaired the event with Justin Timberlake. Guests included Madonna, Victoria Beckham and designer Stella McCartney with her muses: Kate Hudson and Liv Tyler. Menawhile, Rihanna has scrapped her comeback gig in Dubai scheduled for this month due to bad timing. According to show organisers Vibe Event Management, the concert was no longer running due to inappropriate timing for the singer. We want to share with you that Rihanna and her management will not be accepting to hold a public concert at this time as it is not appropriate timing for her, Contactmusic quoted Managing director Yassin Matbouly as saying. The Umbrella hitmaker had also cancelled gigs in Malaysia and Indonesia shortly after the alleged incident with Brown. -DM