What a sweet mother-son moment!

Prince Charles posed with British monarch, Queen Elizabeth, in a new portrait recently shared by Clarence House on Instagram — and we're loving the sophisticated snapshot of the two side-by-side!

"First look: As a year of 90th birthday celebrations draw to a close, we would like to share this special photo of The Prince and The Queen, taken earlier this year at Windsor Castle," the rare pic's caption read on Sunday, Dec. 18.

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In the photo, the Queen can be seen wearing a stunning blue dress and white pearls, while her eldest boy, Charles, donned a dapper black suit with a white shirt and bowtie. Could they get any more perfect? We don't think so!

To celebrate her milestone birthday earlier this year, Elizabeth posed with her two youngest grandchildren and five great-grandchildren in a memorable group portrait. If one thing is for sure, it's no one poses better than the royal brood!

Click through the gallery below to learn fun facts about the royal family!