Christopher Schwarzenegger is showing off his slim figure and new girlfriend.

The 28-year-old enjoyed a family day at a pumpkin patch in Brentwood, Calif., Monday with his sister Katherine Schwarzenegger, her husband, Chris Pratt, and the mystery blonde.

In photos obtained by Page Six, Christopher and his significant other shared a kiss and walked side by side while carrying pumpkins.

The two couples were also joined by Katherine and Pratt's daughters, Lyla and Eloise.

Christopher flaunted his biceps in a white tank top, which he paired with dark green cargo pants and sneakers.

His girlfriend also kept it casual for the family outing, wearing an off-the-shoulder University of Michigan T-shirt -- Christopher's alma mater -- and jeans.

Christopher's girlfriend also joined his family for a lakeside trip last month, per photos shared by Katherine.

The author, 35, shared a carousel of snaps via Instagram documenting her family's "lake days" that included a photo of her youngest brother and his girlfriend snuggling up.

A shirtless Christopher sat in a boat as his girlfriend embraced him and sat on his lap. In another boat snap, the University of Michigan grad flaunted his muscular arms and abs.

Christopher and Katherine's mom, Maria Shriver, commented on the post, seemingly giving her stamp of approval.

"Oh these are so cute ❤️ what fun we have we are blessed ❤️" Shriver wrote.

Unlike some of his older siblings, Christopher has lived his life out of the spotlight and is rarely photographed. He first debuted his body transformation in September 2022 while attending his dad Arnold's star-studded birthday in Malibu, per the Daily Mail.

The following year, he showed off his slim figure as he left a gym in Los Angeles, seemingly following in the footsteps of his bodybuilding legend father.

Christopher broke his silence on his dramatic weight loss back in May and revealed the health habit that allowed him to shed 30 pounds.

"It was a big process," he admitted during a panel at Beacher Vitality's Happy & Healthy Summit in LA, adding that he started his weight loss journey in 2019.

"I just saw how much my weight was prohibiting me from doing the everyday activities," he recalled.

"I tried everything. I was doing meal delivery things in high school, and I remember feeling like a weirdo when I was bringing weird lunches to school," he continued.

When it comes to the diet trick that gave him the most progress, he said it was when he "gave up bread for Lent," which lasts 40 days. However, Christopher revealed that he has yet to reach his goal.

In family snaps shared by Katherine in August, it was clear he made even more progress in his body transformation as he was pictured in a fitted button-down shirt.