Soaking up the sun. Frolicking across the sprawling grounds. Rolling around with his beloved cocker spaniel, Lupo. Welcome to springtime for Prince GeorgeKate Middleton and Prince William’s adorable 21-month-old toddler — at Anmer Hall, the royal country estate in Norfolk, England.

And naturally, no picture of the future king would be complete without his adoring mum by his side, cheering him on and showering him with countless hugs and kisses.

kate middleton and prince george

Kate and George in April 2014.

Of course, this happy family portrait is about to get some new brushstrokes. With Kate, 33, gleefully expecting the arrival of Baby No. 2 at any moment now, soon there will be another little one vying for her affection — and prepping George for that change is at the top of her to-do list.

Related: Kate Middleton Hopes to Have More Than Two Children With Prince William

“The arrival of a new baby is a big upheaval for an existing child, and George will be no different,” royals expert Phil Dampier, author of 'What’s in the Queen’s Handbag? And Other Royal Secrets,' tells 'Closer.'

kate middleton family

Kate, William and George in July 2014.

“Kate has been giving him special attention and talking to him a lot about the baby.” According to Frank J. Sulloway, a psychologist who specializes in birth order, her maternal instincts are right on target: “The single most important thing parents can do is make sure that their kids feel they are getting equal attention.”

To read the full story on Kate, William and George, pick up the new issue of ‘Closer Weekly,’ on newsstands now!