Arnold Schwarzenegger's son Christopher makes major weight loss progress

Christopher Schwarzenegger's sister Katherine Schwarzenegger Pratt just revealed his dramatic weight loss progress.

In a photo posted to her social media, the youngest child of Arnold Schwarzenegger and Maria Shriver could be seen with a slimmer appearance on a boat.

Christopher, 27, was dressed in a white shirt and pink shorts for the breezy getaway.

Katherine also shared photos of other family members, including mom Maria, 69, her uncle Anthony Shriver, husband Chris Pratt,  and what appeared to be the couple's children.

The Vice Chair of the Special Olympics Founder’s Council previously spoke about his weight loss journey this past May, calling his transformation a long process spanning over five years.

“It was a big process,” Christopher explained at the Inaugural Beacher Vitality Happy & Healthy Summit in Los Angeles. “I started in 2019, when I was living in Australia. I was on this big trip… and I just saw how much my weight was prohibiting me from doing everyday activities.”