The Fab Four took to Twitter to share a video of the moments they consider the most special.
Some of the featured moments include Harry and Meghan's wedding and the couple's recent royal tour to Australia, Fiji, Tonga and New Zealand. Kate and William honoured the birth of their child, Prince Louis and the many philanthropic appearances over the year.
"Here are some of our favourite moments from 2018 -- thank you to everyone who made this year so special,” Kensington Palace tweeted alongside the video. "See you in 2019!"
The Fab Four made headlines recently as they appeared together at the Christmas Day service at the Church of St. Mary Magdalene at Sandringham.
Meghan even gave fans a hint at when her baby is due.
"We're nearly there," she told a well-wisher outside of the church.