Britney Spears tweeted a still from her new music video for the single Ooh La La Saturday in which she is wearing a silver band on her ring finger, raising speculation about her status with live-in boyfriend Dave Lucado.View the photo here.The Grammy-winning pop star and the law firm researcher have been dating since February.Spears, 31, has been photographed wearing different rings since February 25 and it is unclear whether the band is a promise ring from Lucado.