See the 'Grey's Anatomy' cast then and now

The 'Grey's Anatomy' cast is returning for season 20! Join EW as we look back on the series' biggest stars throughout the years, including Ellen Pompeo, Patrick Dempsey, and more.

Patrick Dempsey Accused Of 'Terrorizing' His 'Grey's Anatomy' Co-Stars And Causing 'HR Issues,' 'PTSD

See How the 'Grey's Anatomy' Cast Has Changed Since Their First Seasons (PHOTOS)

Grey's Anatomy Is Officially 15 Years Old — Here Are 25 Side-By-Sides Of The Cast Then Vs. Now

Grey's Anatomy': Then and now

Grey's Anatomy Is Officially 15 Years Old — Here Are 25 Side-By-Sides Of The Cast Then Vs. Now

Grey's Anatomy Is Officially 15 Years Old — Here Are 25 Side-By-Sides Of The Cast Then Vs. Now

Grey's Anatomy' Cast on Their First Episode Vs. Last

Grey's Anatomy' Season 18 News, Date, Cast, and Spoilers

See the 'Grey's Anatomy' Cast Then and Now! Greys anatomy cast, Greys anatomy, Patrick dempsey

Grey's Anatomy cast: Then and now Grey's Anatomy star Jessica Capshaw to return as Arizona Robbins

See the 'Grey's Anatomy' cast then and now

Grey's Anatomy Before and After 2021 (The Television Series Grey's Anatomy Cast Then and Now)

Grey's Anatomy' Cast Then & Now: See The Stars' Transformations – Hollywood Life