Prince William has returned to work after enjoying a break over the summer with his family, with the Duke of Cambridge marking Emergency Services Day in the UK on Thursday without wife Kate Middleton.
The Duchess of Cambridge hasn't been seen in public for over two months with many questioning why she has kept out of the public eye for so long.
Some royal watchers have speculated the 39-year-old may be pregnant with the couple's fourth child.
Kate is known to suffer from hyperemesis gravidarum, a severe form of morning sickness that could lead to hospitalisation, which could be the reason she hasn't been out and about as usual.
Sunrise host Natalie Barr recently added to the speculation saying she thought the Duchess may be "pregnant" and unable to come out in public because she might be vomiting "her little heart out".
She later added, "I’ve no idea, I’m just adding to the rumours." The host later concluded, "She could actually just be having a life."
During the Sunrise segment, they also claimed that “some royal watchers are convinced a divorce is looming”.
Kate's last public appearance was July 11, when she attended the Euro 2020 football final with William and son Prince George.
She has also been missing from Instagram since August 6, when she was pictured with a Holocaust survivor. However, the image is believed to have been taken in January this year.
However, it’s not the first time Kate has taken a break from the public eye but that was only 41 days, when she took a holiday to Wales.
Never miss a thing. Sign up to Yahoo Lifestyle’s daily newsletter .
Or if you have a story idea, email us at firstname.lastname@example.org.