Kate Hudson is ''really excited'' to give birth to her first daughter.

The 39-year-old actress is expecting a baby girl with her boyfriend Danny Fujikawa, and after already being mother to two boys from previous relationships - Ryder, 14, and Bingham, six - she is said to be over the moon at the prospect of finally having a daughter.

Recalling the day he found out the happy news, her brother Wyatt Russell told People magazine: ''I was happy. I was teary-eyed because I know how badly she wanted a girl. I know Danny, I'm sure in some part of every man's brain you're like, 'I'd love to have a little me.' But when he met my brother's little girl Rio [Hudson], who's the cutest thing in the entire world, she made him be like, 'Okay, I want a girl.' So they're really excited.''

It comes after Kate's good friend Erin Foster also revealed that the 'Bride Wars' star was desperate for a daughter, and was overjoyed when her gender reveal party saw her showered in pink confetti.

She said: ''[Kate] wanted a girl so badly and they really didn't know until they popped the balloons and pink came out, so it was really exciting. I don't know if you saw Sara [Foster, Erin's sister] jumping on top of Kate like a psychopath but we were just so excited about her having a girl.''

Erin also praised Kate as a ''really good mom''.

She added: ''Kate is a really good mom. She's strict. She's really good with boundaries. She's tough. And Danny is like a hippie. He's very ethereal and go-with-the-flow, so it will be interesting to see how that happens.''

The 'How to Lose a Guy in 10 Days' actress revealed her pregnancy news on Instagram with a video of the moment she popped a set of black balloons which were filled with pink confetti and smaller balloons.

She captioned the footage: ''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's 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 (sic)''