Jessica Biel was left basking in bliss after she successfully managed to get under Britney Spears’ skin with a little J. Timberlake P.D.A at a concert in Hollywood earlier this month.

The 26-year-old former 7th Heaven star took full advantage of an opportunity to irk her boyfriend’s pop singing ex after Justin, J.B, and Brit ended up in the VP section during Robin Thicke concert at the House of Blues on August 14.

“Britney was in great spirits, laughing and joking with a girlfriend accompanying her, but her happy demeanor took a gloomy turn when she discovered Justin and Jessica were sitting next to her,” a National Enquirer eyewitness insists. “Everything was fine until Britney caught a glimpse of Jessica being very touch-feely with Justin.”

Never one to hide her affection for Justin, “Jessica started smirking at Britney as she slowly caressed the back of Justin’s neck, it made Britney furious. She stormed off backstage…”