Kate Middleton says she so excited for Meghan Markle and Prince Harry's baby

The Duchess of Cambridge has expressed her joy for the expanding royal family. - by Chloe Lal

This week a report emerged about Duchess Catherine being left "in tears" at Meghan Markle's wedding dress fitting.

Now, the royal-mum-of-three has spoken out about her sister-in-law.

Watch Meghan announce she is pregnant in the video below.

During her visit with Prince William to Leicester University on Wednesday, a fan asked Kate about her three children – Prince George, 5, Princess Charlotte, 3, and Prince Louis, 7 months.

“They’re doing well, thank you,” she said in a video shared by Harry_Meghan_Updates on Instagram.

“They’re getting excited for Christmas time, because they’ve started all their Christmas songs and the Christmas trees are going up.”

Kate continued, “And Louis’ getting bigger, I can’t believe he’s like seven months, he’s getting to be a big boy.”

#news Kate talking about Meghan and her new baby! Says she's happy for Meghan and to have a cousin for George,charlotte and Louis is special! So cute 😩💗 by the champ @2cool_4school_2lame_4fame . . The Duke and the Duchess of Cambridge were in Leicester today paying tribute to those who tragically lost their lives in a helicopter crash.

The fan followed up by asking if she was excited about Prince Harry and Meghan Markle‘s baby on the way.

Kate immediately responded: “Absolutely!”

“It’s such a special time to have little kiddies,” she shared.

“And a cousin for George and Charlotte, as well, and Louis. It’ll be really special.”

"We knew Vichai as a man who cared deeply about his family and also his community. He of course was a man of wealth, but that wealth did not leave him disconnected from those around him. He believed in giving back." The Duke and The Duchess of Cambridge visited Leicester today to pay tribute to those who died in the helicopter crash at @LCFC's stadium on 27 October. Their Royal Highnesses knew @LCFC's Chairman, Vichai Srivaddhanaprabha, and today joined his wife, son and daughter at the tribute site - to pay their respects & recognise the compassion that the people of Leicester have shown since the accident. 📸PA

Following the announcement of the newest family member, due to arrive this spring, the palace released a statement from William and Kate saying they were “delighted” for the couple.

Unlike the Cambridge kids, Harry and Meghan's little one will grow up at Frogmore Cottage in Windsor, about 25 miles from Kensington Palace.

🎂 Wishing a very Happy 70th Birthday to The Prince of Wales! #HappyBirthdayHRH Two new photographs of The Prince of Wales and his family, taken by @ChrisJacksonGetty in the garden of Clarence House, have been released to celebrate HRH's 70th birthday - visit @ClarenceHouse for more 📷