On Saturday, April 27, she basked as a bride-to-be at a beautiful wedding shower that took place at her mother Maria Shriver's house in Brentwood, California, US Weekly reported.
Readers know the couple went public back in August.
Within months of dating, Radar exclusively learned a holiday proposal was in the works and abstinence would be practiced in their relationship.
Pratt, 39 and Schwarzenneger, 29, announced their engagement two months later in January.
"Sweet Katherine, so happy you said yes! I'm thrilled to be marrying you. Proud to live boldly in faith with you," he wrote alongside a photo of the two embracing one another. "Here we go!"
Since then, Pratt's opened up about wanting to have a winter themed wedding and lots of kids with his future wife.
Until then, take a look at Radar's gallery for an inside look on Schwarzenegger's bridal shower.
Party For The Bride-To-Be
Katherine Schwarzenegger celebrated her wedding shower on Saturday, April 27th in Brentwood California.
The event took place at her mother Maria Shriver's home among 100 of her closest family and friends, that included her father Arnold Schwarzenegger.
The future Mrs. Pratt looked gorgeous in a long white dress with her hair down.
Down To Earth
Guests ate lunch in the backyard by the pool. According to PEOPLE, they were entertained by fun games and the sounds of a gospel choir. They also had the opportunity to make arrangements at a flower station.
Filled With Love
"There was a mix of Maria's longtime friends, family, Chris' family and Katherine's friends," a source tells Us Weekly. "It was a beautiful and loving shower with lots of tributes to the couple and their love for each other and the people in their lives."
Among the many tributes were speeches from Katherine herself, Shriver who thanked Pratt's mom "for raising such a good man," and the groom-to-be, who made an appearance at the end of the shower to publicly express his love.
"Katherine lit up when Chris arrived," a source told PEOPLE. "He also gave a sweet toast. They were adorable together and he wanted her to have all the attention."