The Queen's Great-Granddaughter Steals The Show in Photo to Mark Monarch's 90th Birthday

Move over Prince George, there's a new mini royal in town.

The British royal family released a selection of stunning images taken by photographer Annie Leibovitz to mark Queen Elizabeth's 90th birthday on Thursday.

But it appears that Her Majesty might have been upstaged.

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In one photograph depicting the Queen with the youngest members of the royal family, her great-granddaughter, two-year-old Mia Tindall, steals the show.

In the image, little Mia stands front and center as she grips her great-grandmother's purse -- which elicited squeals of delight from the internet:

The blonde-haired toddler is the daughter of Zara Phillips, the Queen's granddaughter, and former England rugby player Mike Tindall. Mia is 17th in line to the throne.

Prince George and his little sister, Princess Charlotte, also appear in the photograph. As the youngest great-grandchild, 11-month-old Charlotte is in the Queen's arms, as is the tradition of Royal portraiture.

Also in the photo, 8-year-old James and 12-year-old Louise, the children of the Earl and Countess of Wessex and the youngest of the Queen's eight grandchildren.

Read: Happy Birthday George! Palace Releases New Photos as Prince Turns Two

They're joined by the daughters of the Queen's eldest grandson Peter Phillips and his wife Autumn: 5-year-old Savannah and 3-year-old Isla Phillips.

In further images taken by Leibovitz, the Queen is seen walking in the private grounds of Windsor Castle with her dogs, while another photo shows her beside her daughter, Princess Anne.

The photos were released a day after it was announced that Prince George will appear on a postage stamp to mark the Queen's 90th birthday.

Watch: Royal Family Photographer Reveals How He Made Prince George Giggle