On April 6, Kate Hudson was bursting with joy in a gender-reveal video that she posted on her Instagram. As pink confetti exploded from balloons, the mom of sons Ryder, 14, and Bingham, 6, jumped up and down over the news that she and beau Danny Fujikawa, 31, were having a daughter. "My kids, Danny, myself, and the entire family are crazy excited! A little girl on the way," she beamed.

Among the precious few who knew she was pregnant before that video was mom Goldie Hawn, who is excited to become a grandmother again. "They are super close and tell each other everything," an insider shares with Closer. "As soon as Kate found out she was pregnant, she texted her mom!"

View this post on Instagram

SURPRISE!!! 🤱 If you’ve wondered why I’ve been so absent on my social channels it’s because I have never been more sick! It was the most sick first trimester of all my children. Boomerangs have made me nauseous, Superzoom is an easy way to have my head in the toilet, food instagrams make me queezy and thinking too much about insta stories made me even more exhausted than I already had been. If you’ve seen me out and about smiling and pretending like everything is amazing…I was lying! BUT! I have broken through on the other end of that and rediscovering the joys of insta/snap. We have been trying to keep this pregnancy under the radar for as long as possible but I’m a poppin now! And it’s too darn challenging to hide, and frankly hiding is more exhausting then just coming out with it! My kids, Danny, myself and the entire family are crazy excited! A little girl on the way 💕

A post shared by Kate Hudson (@katehudson) on

Goldie, who perfectly balanced a personal life with her thriving career, has been a great role model for Kate, 39. "I always remember my mom saying there's only one thing in life she refused to fail at: raising her children," Kate says. "A good family is the answer to happiness," insists Goldie. "I look at our kids and grandkids and there's nothing in the world that could make me as proud as I am of all of them." (She and longtime love Kurt Russell, 67, also have two grandsons and a granddaughter thanks to Kate’s brother, Oliver Hudson, 41).

"She sees her grandchildren all the time," the insider says. "She gets in the sandbox, blows bubbles, and acts silly." In fact, hearing Kate's latest news made her go absolutely wild. "Goldie's an elephant advocate, so she's already bought the baby a huge pink elephant," the insider reveals, though the best gift of all is how she's always there for Kate. "It's all about laughter, shared secrets, long talks, heart-to-hearts about children," Goldie says.

For more on Goldie Hawn, pick up the latest issue of Closer Weekly, on newsstands now — and be sure to sign up for our newsletter for more exclusive news!