(Image Credit: Jonathan Nackstrand/AFP/Getty Images)

A year ago, all eyes were on the royal wedding of Prince William and Kate Middleton.

The extravagant ceremony included many memorable moments, from the world debut of the bride's sister Pippa Middleton's backside, to 3-year-old bridesmaid Grace van Custem frowning as the royal couple shared a kiss on the balcony at Buckingham Palace.

On Sunday, there will be no pomp or ceremonies. The couple is expected to celebrate their first year as husband and wife at a private gathering with close friends and family. The location of the intimate gathering hasn't been made public.

"Their first anniversary they're not going to want a big parade. They just want to enjoy the time together privately," Victoria Arbiter, a royals expert, told ABC News.

The next few months will be jam-packed for the Duke and Duchess of Cambridge. They will be helping Queen Elizabeth celebrate 60 years of being on the throne before gearing up for the summer Olympics in London.

After their busy few months, Arbiter said she thinks they'll get to work on the one royal duty they have yet to fulfill.

"I can see a baby being born in 2013 as really the way to go," she said.