Pop star Britney Spears is back in Las Vegas to work on her upcoming album in a recording studio at the Palms Casino Resort. The TOXIC singer recently spent a romantic weekend at the resort with new boyfriend ISAAC COHEN, but this time she was accompanied by her two sons, Sean Preston, one, and JAYDEN JAMES, four months. The 25-year-old and her family arrived late on Tuesday night (30JAN07) and will be staying in a $25,000 (GBP13,000) suite at the hotel, complete with Jacuzzi, rotating bed and Infiniti pool. Spears will be working with top producer LUKASZ GOTTWALD, who has collaborated with Kelly Clarkson, Mos Def, Missy Elliott and Kelis. The star's manager, LARRY RUDOLPH, said earlier this month (JAN07) that Spears is halfway through recording her new CD, which is expected to be released this autumn.