Julia Louis-Dreyfus feels like a ''different'' person after beating breast cancer.

The 'Veep' actress underwent successful surgery earlier this year after revealing a year ago that she had received the life-changing diagnosis, and says she is ''grateful'' to have made it out the other side.

In an interview with InStyle magazine, she said: ''I do feel different, but I can't quite articulate how.

''I've come out the other side of this, and I'm still not exactly sure how to define the difference other than to say I'm grateful, of course. But it's more than that. It's bigger.''

The 57-year-old comedienne completed chemotherapy in January, and updated her fans to let her know she was pleased with her progress and is feeling good.

She shared a glamorous professional picture of herself on Instagram, and wrote: ''Hoorah! Great doctors, great results, feeling happy and ready to rock after surgery.

''Hey cancer, 'F**k you!' Here's my first post-op photo.''

When she announced her diagnosis last September, the star admitted she was grateful to have ''fantastic'' insurance and a supportive network as she knows other people are not so lucky.

She tweeted at the time: ''1 in 8 women get breast cancer. Today, I'm the one.

''The good news is that I have the most glorious group of supportive and caring family and friends, and fantastic insurance through my union. The bad news is that not all women are so lucky, so let's fight all cancers and make universal health care a reality.''

When the former 'Seinfeld' star celebrated the end of her treatment, she shared a video of her two sons, Henry, 26, and Charlie, 21 - whom she has with husband Brad Hull - dancing and lip syncing to Michael Jackson's hit single 'Beat It', which they'd made to lift her spirits.

She captioned the video: ''My beauty boys @henryhallmusic @charlie_hall made this for me today, my last day of chemotherapy. Pretty swell, right? Ain't they sweet? (sic)''