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By Laura T. Coffey
Prince Charles and Camilla, Duchess of Cornwall, hold koalas during a royal visit to Adelaide, Australia in Nov. 2012. Camilla turns 66 on Wednesday, July 17, 2013.Today

Camilla, the Duchess of Cornwall, turns 66 on Wednesday, July 17, and her stepson Prince William’s baby is due to arrive in “mid-July.” How will the public react if Camilla and the royal baby end up with the same birthday?

Camilla Parker Bowles is pictured in 1997, two years after Princess Diana called her the "third person" in her marriage with Prince Charles.Today

At this stage of the game, they might just shrug. Camilla’s image has undergone an almost miraculous makeover over the past two decades, during which time she’s silently transformed from being one of the most loathed mistresses in Britain to being a funny grandma.

'Queen Camilla'? Duchess's journey to popularity from hated 'homewrecker'

On Monday, Camilla gushed about “waiting by the telephone” for news of the royal birth, saying, “Hopefully by the end of the week, he or she will be there.”

But if the baby arrives on July 17? Then one thing is clear: Royal party planners could find themselves quite busy smack-dab in the middle of summer for years to come.

Prince Charles expected to be an involved granddad to royal baby

In honor of Camilla’s 66th birthday, feast your eyes on this assortment of then-and-now photos of Prince Charles’ consort:

Camilla Parker Bowles smiles beneath an unforgettable hat in 1994.Today
Unmasked: Prince Charles and Camilla have a laugh on July 9, 2013 at a London reception for a charity working to save Asian elephants from extinction.WPA Pool / Today
Not just koalas: Camilla holds a kangaroo during her visit to Australia in Nov. 2012. Images like these have helped the public come to view — and like — Camilla as a real person.Today
Camilla meets and laughs with African drummers in Croydon, Greater London on Sept. 20, 2012.Today
Camilla tries a cake on May 27, 2013 during her first overseas solo engagement in Paris.Today
Passing the sniff test: Camilla takes time to talk with kids at a children's museum in Amman, Jordan on March 12, 2013.Today
Camilla greets a sheep during a visit to Christchurch, New Zealand on Nov. 16, 2012.Today
Camilla dances with with Sam Johnson at a "Dance-O-Mat" in Christchurch, New Zealand on Nov. 16, 2012. The Dance-O-Mat was set up to give people the opportunity to keep dancing after many venues were destroyed by the earthquake of 2010.Today
Camilla drops by the set of the BBC One drama series "Doctor Who" in Cardiff, Wales on July 3, 2013.Today
Camilla attempts a netball shot with Katrina Grant, left, of the New Zealand Silver Ferns netball team in Auckland, New Zealand on Nov. 12, 2012.Today
Camilla runs under a brightly colored parachute during a youth rally in Guernsey on July 19, 2012 during a Diamond Jubilee visit to the Channel Islands with Prince Charles.Today
Ho-ho-ho! Camilla meets Father Christmas and helps him switch on the Christmas lights on Dec. 7, 2012 in Tetbury, England.Today
From the moment the royal couple announced in December 2012 that they were expecting, the world has been captivated by Kate's many maternity looks.