Kate Middleton Released from Hospital After Abdominal Surgery

Kate Middleton is finally out of the hospital after undergoing surgery nearly 2 weeks ago -- and the official word is ... she's doing alright, and continues to get better.

The Princess of Wales is back home and resting with her family -- this according to Kensington Palace ... which made the announcement Monday. They wrote, "The Princess of Wales has returned home to Windsor to continue her recovery from surgery."

They add, "She is making good progress." This is reassuring, considering how long she was hospitalized, and how suddenly this news was sprung onto the public in the first place.

There's more from Kensington as well -- with the Royal house saying, "The Prince and Princess wish to say a huge thank you to the entire team at The London Clinic, especially the dedicated nursing staff, for the care they have provided."

More good news for the Royals ... King Charles was also released from the hospital Monday. Remember, he went in for a prostate procedure ... just around the same time as KM.

While the King's procedure/health issue was crystal clear ... Kate's remains somewhat of a mystery -- as no one seems to know what exactly the problem was. Although, that hasn't stopped people from speculating ... with all sorts of ailments being floated as possibilities.