Patrick and Brittany Mahomes’ 4-year-old daughter, Sterling, is already “the best big sister” to their newborn Golden Raye.

Brittany shared a new glimpse of her 5-week-old baby to her Instagram Story Thursday, posting a sweet photo of Sterling holding her little sister as the family celebrated their eldest child’s birthday.

In the adorable photo, Sterling is pictured wearing a pink long-sleeve T-shirt as she bottle feeds Golden, who had a white cap on and a pink onesie.

The mom of three later shared a video of Sterling pushing Golden’s stroller.

“The best big sister,” she captioned the moment, gushing over daughter Sterling.

The couple are also parents to son Patrick “Bronze” Lavon III, 2.

The Sports Illustrated swimsuit model, 29, gave birth to the couple’s third child on Jan. 12.

Brittany announced the news on Instagram with a black-and-white snap of the couple holding hands by the newborn’s feet.

“Golden Raye Mahomes 1/12/25,” she captioned the upload.

Later that month, the fitness trainer gave her followers a first glimpse of their’ newborn daughter via her Instagram Story.

The former soccer player posted a Boomerang video of Golden’s tiny toes wiggling in a gray onesie with footballs embroidered on the feet.

Since welcoming their second baby girl, Golden has already started to fit right in with the Mahomes family fan club as she supported her father at the 2025 Super Bowl in New Orleans weeks ago.

The new addition joined the rest of the Mahomes brood at this year’s big game as Patrick’s mother, Randi Martin, reported for “grandma duty” from the family’s VIP suite.

Earlier this month, Martin caught up with Page Six at the NFL Honors event, telling us that it was important to Patrick that had all three of his children in attendance, saying “it’s special for him.”