Britney Spears by John Sciulli/WireImage.com Britney Spears by John Sciulli/WireImage.com

More (and I'm guessing there will always be more) details are trickling in on Britney Spears' upcoming How I Met Your Mother drop-by. Series creator Craig Thomas tells Us that in the as-yet-unscheduled episode, Spears will set her sights on no less than Ted Mosby, Architect himself. Playing the assistant to the dermatologist ( originally Alicia Silverstone, now Scrubs' Sarah Chalke) tasked with removing Ted's embarassing butterfly tat, Spears' character falls hard for the patient but "keeps on screwing up, saying awkward things." Meanwhile, "Ted's absolutely oblivious. Go, Josh Radnor - he has Britney Spears chasing after him!"

Spears arrived with little baggage and nary an entourage, says Thomas, when she showed for Monday morning's table read. "She seemed to fit right in," he says. "She was having a good time. She was laughing. [The] vibe in the room was just very fun."

Indeed, Neil Patrick Harris concurs that Spears' HIMYM storyline is very sweet, telling Entertainment Tonight, "It will be very unlike any Britney we have seen before - and we have seen a lot of Britney recently."

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" HIMYM/Britney Fallout: Silverstone Out, Chalke In!
" Britney Spears Lands One Mother of a TV Role