The expectant mum, 39, and her boyfriend Danny Fujikawa, hosted a backyard baby shower on Sunday 23rd September, in Los Angeles.
The pink themed bash was decorated to the nines with a huge pink and white flower wall, along with floral crowns and pink balloons.
Kate invited her nearest and dearest including Jennifer Meyer and Fujikawa's stepsister Sara Foster.
Hudson, who is already mum to Ryder Robinson and Bingham Hawn Bellamy, embraced her pregnancy glow wearing a white crocheted dress, while her pixie hair cut was adorned with a pink floral crown.
This is the first child for Fujikawa, who began dating Hudson in December 2016.
Fujikawa's brother Brady along with his girlfriend Sian Gordon shared their joy about the impending arrival of their newest member.
Gordon shared on Instagram, "Newest family member coming in hot!"
While Meyer's said, "Today, celebrating our baby girl who’s having a baby girl. We love you @katehudson."