Prince George and Princess Charlotte proved that they make the most adorable snow bunnies during their icy holiday.

The royal family's 2015 Christmas portrait [4] would look great on any fridge.

Could Princess Charlotte look any more adorable?!

The family of four could not have been cuter on Princess Charlotte's christening day in July.

George showed off his smile while holding his baby sister, Charlotte, in May 2015, less than a month after her picture-perfect debut [5].

George and Charlotte looked so grown up on their winter vacation.

The family huddled together at a windowsill in their Kensington Palace apartment [6] in March 2014.

The family's dog, Lupo, joined Kate Middleton, Prince William, and Prince George for the royal baby's first portrait shoot [7] in August 2013.

With a grin and festive sweater, George was ready for the holiday season in 2014.

George found a good balance in his first birthday portraits from June 2014 [8].

Kate shared a sweet moment with her daughter.

George let out a laugh when his Christmas 2014 portraits [9] were snapped.

Kate took on photographer duties to capture her children together in May 2015.

London's Natural History Museum was the backdrop for their family day in June 2014.

George's rosy cheeks made an appearance in December 2014.

Just look at how small George was in August 2013!

George looked into his sister's beautiful eyes in May 2015.

George gave Charlotte a kiss during the baby's first official photo shoot in May 2015.

Like father, like son! William and George showed off their big smiles in the family's photoshoot with Mario Testino [10] in July.

Aw! Princess Charlotte is delighted by a stuffed animal in a photo taken by proud mom Kate [11].