Why so sad, Britney? Photo agency X17 snapped the "X Factor" judge and her fiancé Jason Trawick looking generally unimpressed as they went shopping for Halloween costumes at Calabasas, Calif., on Sunday. The 30-year-old pop star can be seen keeping it casual in a loose white camisole and flip-flops and she walks from the store to her… SmartCar. Yes, Britney was driving a SmartCar. The photo agency also notes that Spears was not wearing her engagement ring.

Spears reportedly inked a $15 million deal
to join fellow judges L.A. Reid, Demi Lovato and Simon Cowell for Season 2 of Cowell's singing competition, which debuted to a meek viewership of 8.5 million in Sept. -- 32 percent less than last year's premiere.

For more photos of Spears, click through to x17online.com.

britney spears jason trawick

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    LAS VEGAS, NV - DECEMBER 8: US singer, Britney Spears, arrives at the 1999 Billboard Music Awards, 08 December, 1999, held at the MGM Grand Arena in Las Vegas. (Photo credit should read BRIAN JONES/AFP/Getty Images)

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    LOS ANGELES, UNITED STATES: US pop singer Britney Spears poses with the award she won for favorite new artist at the 27th annual American Music Awards 17 January 2000 in Los Angeles. The American Music Awards winners are choesn by music listeners across the US. AFP PHOTO Jim RUYMEN/jr (Photo credit should read JIM RUYMEN/AFP/Getty Images)

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    LAS VEGAS, NV - DECEMBER 03: Singer Britney Spears holds a bouquet of flowers at a welcome ceremony as she celebrates the release of her new album 'Britney Jean' and prepares for her two-year residency at Planet Hollywood Resort & Casino on December 3, 2013 in Las Vegas, Nevada. Spears' show 'Britney: Piece of Me' will debut at the resort on December 27, 2013. (Photo by Ethan Miller/Getty Images)

  • The 40th Annual People's Choice Awards - Press Room

    LOS ANGELES, CA - JANUARY 08: Singer Britney Spears, winner of the Favorite Pop Artist award, poses in the press room at The 40th Annual People's Choice Awards at Nokia Theatre L.A. Live on January 8, 2014 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)