Catherine, Duchess of Cambridge — née Kate Middleton — has always had a picture-perfect smile. Now, it will stay that way for perpetuity: She and Prince William are the subject of the newest wax sculptures at Madam Tussaud’s in London.

Waxworks of the Duke and Duchess of Cambridge are unveiled at Madame Tussauds, London. (Jonathan Short/AP)

The sculptures are based on the couple’s engagement photos, with the duchess wearing a perfect replica of the blue Issa dress she had on that day. The couple did not attend the unveiling, and did not pose for the sculptures, which were created with photographs, according to the Telegraph. Each sculpture took 30 people about four months to make

“We created the engagement scene, that press call when they both looked a little bit nervous but so happy — that's what we wanted to come across,” said Louis Wiltshire, the sculptor of Kate’s head, to the Telegraph. “We started by using as many pictures as we could get hold of from all sorts of different occasions and we pieced the head together from different photos to get the structure right — likeness is important but so is the expression.”

Though the Queen is currently the most popular figure in the museum, Madam Tussaud’s expects the pair to be an even bigger draw for visitors, especially as the royals’ one-year anniversary approaches at the end of this month.

A painter gives a touch-up to the new wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge. (Stuart Wilson/GETTY IMAGES)

(Stuart Wilson/GETTY IMAGES)

(Jonathan Short/AP)

(Jonathan Short/AP)