Jillian is a fictional character portrayed by Jamie-Lynn Sigler in the TV series How I Met Your Mother.
In the first episode they appeared in, titled Woooo! (season 4), they were 27 years old.
They appear in 1 episodes out of a total of 208 aired
Episodes1
Woooo!
episode S4.E8 november 2008Lily is disappointed to discover that Robin is secretly a "Woooo! Girl," and Barney secretly sabotages Ted's chance to get the contract to design a new bank skyscraper.