Celebrity | How I Met Your Mother Encore! Britney Back on Sitcom How I Met Your Mother co-creator: 'We’re all so thrilled' By Sam Gale Rosen Posted Apr 28, 2008 2:55 PM CDT Copied In this image released by CBS, Josh Radnor, left, speaks to Britney Spears, who portrays receptionist Abby, in a scene from "How I Met Your Mother." which aired on March 24,2008. (AP Photo/CBS, Monty Brinton) Britney's back for a second stint guest-starring on How I Met Your Mother. Spears' first cameo netted the show its highest ratings ever, and the new episode began filming today, reports People. “We’re all so thrilled to have Britney joining us once again," says the show's co-creator. Read These Next It started with failure to say 'thank you,' ended with murder. Freak accident kills a woman as she cleans her car. It landed on the 4th try. There wasn't enough fuel for a 5th. Trump's pick wins charges against Letitia James. Report an error