Alternatively, she may choose to travel to the Middleton family home in Berkshire, where Kate can celebrate with her own mother Carole, her dad Michael and her siblings James and Pippa.
"The Duchess of Cambridge will be spending the day privately," a palace source told HELLO!
Either way, the Duchess is not expected to carry out engagements or royal duties. A palace source confirmed to HELLO! Online: "The Duchess of Cambridge will be spending the day privately."
The day will no doubt be filled with a lot of love and laughter. Prince George, who is "lively" and a "little monkey" according to his dad William, may be running around the house, playing with his toys and joining in the celebrations as he did at Christmas.
The family may choose to stay at Anmer Hall, or travel to the Middleton family home in Berkshire
Princess Charlotte, on the other hand, is ten months old and a little more relaxed. She was recently described as "very easy, very sweet" by her doting dad.
"[She is] very sweet," William told rugby players as he attended a reception hosted by the Welsh Rugby Charitable Trust. "But all fathers say 'just you wait, when they get to nine, 10, 11 they go crazy'. I'm looking forward to it, there will be some drama."
Kate welcomed baby Princess Charlotte in May
While the Cambridges will be celebrating Mother's Day in private, royal watchers can look forward to the possible release of official portraits later this year.
Kate, who is a talented shutterbug, often likes to get behind the camera and share photos of her children instead of calling on official royal photographers.
The first solo portraits of Charlotte were taken when the little Princess was six months old. When Charlotte turns one in May, royal fans are hoping they will be treated to a new set of images, perhaps taken in advance by mum Kate, at a private celebration like Mother's Day.