Bob Saget's widow Kelly Rizzo has paid tribute to her late husband with a bittersweet Instagram post.

The 42-year-old Eat Travel Rock founder shared a romantic vacation snap of herself and Full House star Saget, who died unexpectedly on January 9 at the age of 65.

In the picture, Rizzo and Saget can be seen relaxing on the beach. The loved-up couple sit side-by-side on sunloungers beneath a cabana while toasting their large cocktail jugs.

[[instagramwidget||https://www.instagram.com/p/CZH1h6JvdcP/]]

Rizzo captioned the idyllic snap with a poignant caption, writing: "My incredible husband. The world will never be the same."

Saget's body was found in his hotel room at the Ritz-Carlton Orlando. The comedian - who was on a stand-up tour when he passed away - had performed in Jacksonville just the day prior to his body being found.

Though an official cause of death is still weeks away from being announced, authorities have speculated that the comedian may have died of a heart attack or stroke in his sleep, MailOnline reports.

Blogger and TV show host Rizzo married Saget in October 2018. In TV interviews since his death, she has indicated that her husband was in good health before he passed away.

Saget Rizzo [[imagecaption|| Bob Saget and Kelly Rizzo at an event in Los Angeles on September 2018. Credit: UPI / Alamy]]

During an appearance on the Today show, Rizzo told host Hoda Kotb that "[Saget] was very happy and thrilled to be back out on the road."

But while she didn't mention any physical ailments, Rizzo did suggest that her husband's mental health may have been fragile.

"He was also very sensitive, and just all the weight of everything going on in the world, it was just weighing very heavily on him," she explained.

"That’s why he felt more compelled than ever to make people laugh," the widow added.

Meanwhile, in an earlier Instagram post on January 15, Rizzo paid tribute to her husband saying that she had "no regrets" about their time together.

[[instagramwidget||https://www.instagram.com/p/CYxJu6jvtva/]]

"I have no regrets. We loved each other so damn much and told each other 500 times every day. Constantly. I know how much he loved me until the very last moment and he knew the same. I’m so grateful for that. Not everyone gets that," she wrote.

Featured Image Credit: WENN Rights Ltd / Alamy

Kelly Rizzo says the 'world will never be the same' after death of 'incredible husband' Bob Saget