Dawn Olivieri (born on February 8, 1981) is an American actress, model and voice actress who has appeared in a number of television shows and feature films. She has appeared in the Showtime series House of Lies since 2009, playing the competitive and libidinous management consultant and ex-wife of main character Marty Kaan and mother of Roscoe Kaan. She acted as Janice Herveaux in the third season of the HBO series True Blood. She played a reporter and Damon Salvatore's girlfriend Andie Star in the hit CW show The Vampire Diaries. Wrapping up the 4th season on Heroes as the tattooed temptress "Lydia", she has also completed parts on TBS's My Boys, NBC's Knight Rider, TNT's Trust Me, and SyFy's Stargate: Atlantis, and recurred on CBS's How I Met Your Mother. Dawn is a lead in the SyFy movie HYDRA, and she is the voice of Pepper Potts in the new Avengers animated series on Disney XD. She appeared in the October 2009 issue of Maxim. Olivieri appeared on HBO's Entourage on September 13, 2009, and hosted a contest on Scripped. She most recently voiced in the video game, inFamous 2 as Lucy Kuo.