Kate Walsh is an American actress, best known for her role as Dr. Addison Montgomery on the hit television series 'Grey's Anatomy' and its spin-off 'Private Practice.'Walsh was born in San Jose, California in 1967. She began her career in the entertainment industry as a model in Japan and Italy before transitioning to acting. She made her television debut in a 1995 episode of 'The Drew Carey Show' and later appeared in various television shows such as 'The Sopranos,' 'Law & Order: Special Victims Unit,' and 'The Mind of the Married Man.'In 2005, Walsh landed the role of Dr. Addison Montgomery on 'Grey's Anatomy.' The show, which followed the lives of surgical residents at a Seattle hospital, quickly became a cultural phenomenon and made Walsh a household name. She starred in the show for three seasons before departing to star in the spin-off 'Private Practice.' The show, which focused on the private practice of Dr. Montgomery, ran for six seasons from 2007 to 2013.Walsh's performance as Dr. Montgomery earned her critical acclaim and several award nominations, including a Golden Globe nomination for Best Actress in a Television Series - Drama in 2007. She also won the People's Choice Award for Favorite TV Drama Actress in 2008.In addition to her work on 'Grey's Anatomy' and 'Private Practice,' Walsh has appeared in a number of films such as 'Afternoon Delight,' 'Under the Tuscan Sun,' and 'Legally Blonde 2: Red, White & Blonde.' She has also lent her voice to the animated film 'Cars' and its sequel 'Cars 2.'In recent years, Walsh has continued to act in both television and film. She starred in the short-lived series 'Bad Judge' and 'The Catch,' and guest-starred on shows such as 'The Mindy Project' and 'Broad City.' In 2018, she starred in the Netflix series '13 Reasons Why' as the mother of one of the main characters.In addition to her acting career, Walsh is also an entrepreneur. She is the founder and CEO of Boyfriend Perfumes, a fragrance company for women. She is also an advocate for mental health awareness and has been open about her own struggles with anxiety and depression.Kate Walsh is a talented actress who has made a name for herself in both television and film. Her portrayal of Dr. Addison Montgomery on 'Grey's Anatomy' and 'Private Practice' has cemented her place in the cultural zeitgeist and earned her critical acclaim. She has also proven herself to be a versatile actress, playing a wide range of roles throughout her career. In addition to her acting, she is also an entrepreneur and advocate for mental health awareness.