Dak Prescott's fiancée, Sarah Jane, cheered for her beau as the Dallas Cowboys lost 31-14 at the Chicago Bears in Week 3 on Sunday. It is Prescott’s first season after welcoming his second daughter.On Sunday, his fiancée shared a mirror selfie in a white-and-black outfit. Jane wore black pants paired with a white top and a Cowboys hat. She accessorized her look with a few bracelets and rings.Dak Prescott’s fiancée, Sarah Jane. Ig story/@sarahjaneDak Prescott's fiancée has been active on social media for the new NFL season. Earlier this month, she cheered for her husband, joined by their daughters. The couple’s younger daughter, Aurora, attended her first NFL game against the New York Giants."Sleepy girls but daddy got the W," she wrote.Prescott is in his 10th season with the Dallas Cowboys. Dallas lost its season opener to the Philadelphia Eagles 24-20 before winning against the Giants 40-37.Dak Prescott’s fiancée, Sarah Jane, shares adorable off-season moments with their daughtersDak Prescott's fiancée, Sarah Jane, shared her glimpses of her offseason adventures featuring her daughters on Instagram on Sept. 13. She shared a post with a sweet caption:"Some country girls and their cowboy." View this post on Instagram Instagram PostShe posted a family snapshot in the first slide of the post, posing alongside her husband and their two daughters. All of them wore matching light blue outfits. The couple had a baby girl, Margaret Jane, in February 2024 and welcomed another daughter, Aurora, earlier this year.The Cowboys quarterback reacted to the post. He expressed gratitude to his fiancée and talked about a picture where Jane wrote "Mrs. Prescott" in a notebook."It’s hard to choose a favorite!! Thankful for you babe and these 2 girlies ❤️! I love yall so much! And the way you write your future last name 🔥," he commented.Prescott's comment to his fiancée's post/@sarahjaneFollowing their loss to the Bears, the Cowboys will now face the Green Bay Packers on Sept. 29.