Kaley and the "Ozark" actor started dating in 2022 and welcomed their first child, Matilda, last year.
The couple took to social media to announce the exciting news, with 'Stewardess' star Kaley sharing a photo on her Instagram Stories of her flashing a ring while caressing Tom's face.
"Amazing weekend," she wrote under the photo, before later posting a video of the gold ring and gushing about the "wild, beautiful trip" the couple had been on.
"What a wild, beautiful trip life can be," she wrote. "I'm grateful for every time that brought me right to you @tommypelphrey."
She went on to say that Tom collaborated with jewelry brand Shahla Karimi to create a unique ring for his fiancée.
The couple met at the premiere of Tom's hit Netflix series "Ozark" and made their romance public in May 2022 | BGNES