Kate Walsh has former Grey's Anatomy co-star Ellen Pompeo's back.

In January 2018, Pompeo opened up about the battles she has fought for more money as the lead on the hit ABC show since its debut in 2005.

'I just adore her. I'm so proud of her and thrilled for her,' Walsh, who starred as Dr. Addison Montgomery on the medical drama from seasons one through eight, told Us Weekly on Thursday, August 1.

'She's like, I'm in it to win it.'

She has her back! Kate Walsh came to the defense of former Grey's Anatomy co-star Ellen Pompeo and her pay disparity comments in January 2018

In her revealing interview with the Hollywood Reporter 18 months ago, Pompeo talked about how it was a 'defining moment' for her career when Patrick Dempsey left the show in 2015 because the ABC brass had always used him as leverage against her with lines like — ‘We don’t need you; we have Patrick.’

She continued, 'I don’t know if they also did that to him, because he and I never discussed our deals.'

Pompeo, who has played the show's namesake Meredith Grey, confessed she struggled with the idea of leaving the show.

'You feel conflicted but then you figure, I'm not going to let a guy drive me out of my own house.'

Gushing: 'I just adore her. I'm so proud of her and thrilled for her,' Walsh, who starred as Dr. Addison Montgomery on the medical drama from seasons one through eight, told Us Weekly

'She's right, man. It is a really frustrating thing, but Hollywood is not fair,' Walsh, 51, said of Pompeo's journey to be paid what she feels she's worth.

'There is no, like, well you did go to X number of years of school and you did this, this and this, so we're going to [do this]. But it’s really frustrating as a female.'

On the heels of more women going public with their fight for equal pay, Walsh does feel like things are getting better.

'I'm almost 52. I'm still loving my work, and I know where I can get paid, and I think I have a good idea of where my value is and where and what I'll do for nothing because I love the art.'

Cha-ching: Pompeo's fight paid off. She will make more than $20 million for season 16; the actress has played Meredith Grey since the shows debut in 2005

As a result of Pompeo's tenaciousness, she now has a say in the show's direction along with creator Shonda Rhimes.

She's also making more than $20 million for the upcoming season 16, with the potential to make even more with backend equity points.

Season 16 of Grey’s Anatomy premiere's on Thursday, September 26, at 8 p.m. ET.