Britney Spears has sparked outrage once again after shopping for sexy lingerie in West Hollywood with her young son at her side. The TOXIC star, who has regularly been seen out partying since filing for divorce from husband KEVIN FEDERLINE in November (06), was spotted with her 16-month-old son Sean Preston at Trashy Lingerie on Sunday (21JAN07). Spears, who was famously snapped without her panties at one late-night party, was followed to the store by a pack of paparazzi. The singer told the snappers she was still dating model ISAAC COHEN, despite telling them last week (18JAN07), "Me and Isaac, we're not together, by they way." The couple recently shared a lavish weekend getaway in Las Vegas and Spears said she was picking up a special Valentine's Day (14FEB07) outfit to wear for her new beau.