She was only 37.

The Texas women's basketball team announced the devastating news Monday evening, saying the former UT forward -- who was diagnosed with stage 3 breast cancer in 2015 -- died from the disease.

"Tiffany had a great career and was an impact player," her former UT coach Jody Conradt said.

"She was recognized for her all-around game and the fact that she was tremendously mobile and could play multiple positions. She was beloved by teammates, and we share in the sadness of her passing."

Jackson was a hoops star in high school, winning a state title and Gatorade's Player of the Year award.

The awards didn't stop after high school ... during her four years at UT ('03 to '07), she won ESPN's National Freshman Of The Year award and became the only person at the school to record a combined 1,000 points, 1,0000 rebounds, 300 steals, and 150 blocks.

Jackson was selected 5th overall in the 2007 WNBA Draft and went on to play for the New York Liberty, Tulsa Shock and Los Angeles Sparks during her 9-year career.

After retiring in 2018, she re-joined the Longhorns as an assistant coach for the women's basketball team. Then, in April of this year, she got a head coaching gig ... when she was named the HC at Wiley College.

"I know she was so excited to be the head coach at Wiley College for the upcoming season," UT current head coach Vic Schaefer said.

"She will be sorely missed by so many. Our deepest sympathies go out to her family."

Several WNBA players paid tribute to Jackson, including Tamika Catchings, who called her "absolutely amazing."

"Going to miss her smile, presence and heart for others."