Finally! Kate Middleton and Prince William‘s royal baby arrived on Monday, April 23, and we’re already giddy with joy over all the Prince’s milestone moments. Lucky for us, their newborn son already completed one of them — his first family photo outside of the Lindo wing, which happened moments after his birth!

We were so excited to see Kate and William walk out of the Lindo Wing with their newborn in their arms. The steps of St. Mary’s hospital was where their third child was introduced to the world. We couldn’t think of a prettier backdrop than those sandstone walls of the prestigious London institution!

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And history repeated itself, as baby No. 3 even got a visit from big brother Prince George and new middle sibling Princess Charlotte during his hospital stay. Unfortunately, George and Charlotte didn’t stick around and appear in the Lindo Wing photos.

Who can forget when George arrived with his dad to meet his little sister back in 2015? Following George’s 2013 birth, Kate wore a blue dress with white polka-dots — an ode to Princess Diana. After Charlotte’s 2015 birth, she wore a yellow floral frock for the baby’s first photos outside the hospital. This time, Kate wore a red dress — another tribute to Diana, who wore red when she introduced Prince Harry to the world back in 1984.

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Kate and William leaving the Lindo Wing with Prince George.

Aside from his first photo with Will and Kate, there are more milestones we can’t wait to see the little boy achieve — from seeing him take his first steps, to watching him master the royal wave by Queen Elizabeth‘s side on the balcony of Buckingham Palace. We’ve rounded up the remaining top four royal firsts we can’t wait to watch unfold — scroll down to see!

1. Baby Cambridge’s first official portrait

Now this is a big moment! There will come a time in the royal baby’s life where he will be photographed on behalf of the royal family, and that picture will be shared around the world. In August 2013, Kensington Palace shared the first-ever family photo of a one-month-old Prince George and his proud parents. And in one shot, their pet dog Lupo made a starring appearance. The pictures were taken by Kate’s father, new grandpa Michael Middleton, in the garden of their family home in Bucklebury, England.

Princess Charlotte’s first official royal portrait waved the cute flag high. A series of four images, taken by mom Kate, showed Prince George in his new role of big brother cradling his little sister before planting a kiss on her cheek. We’re predicting the family will continue with their intimate, non-formal approach to official portraits with the third baby. Given how many family snaps have been captured by Kate, it seems like a natural choice for the shutterbug to photograph her newborn. And if history has taught us anything, we’re betting George and Charlotte will be playing a key role — and the photo will take place at their Kensington Palace apartment, or at their country residence Anmer Hall.

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Prince George’s first family photo.

2. The royal christening

The royal christening has to be one of the most anticipated events following the birth of a Prince or Princess. It’s safe to say William and Kate will continue the tradition of getting their bundle of joy baptized by the Archbishop of Canterbury, The Most Reverend Justin Welby.

Following his birth, Prince George made his first public appearance at his christening at St. James’s Palace, which was a private family affair. While little sister Princess Charlotte had a more public event, with the paddock outside St. Mary Magdalene Church in Sandringham left open for the public to see the entire royal family. The christening was attended by the entire British royal family, including the Queen and the Middleton clan. Sadly, Prince Harry was in Africa at the time, but this year we’ll hopefully see newlywed Harry and his wife, Meghan Markle, in attendance!

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A family photo at Princess Charlotte’s christening.

3. The baby’s first outing

With Prince George, we got to see the tot enjoy everyday life with his parents on a handful of occasions. One of the cutest times was when the wriggly toddler showed off his crawling skills at a polo match. After her royal christening, Princess Charlotte made her dazzling balcony debut at Trooping the Colour in 2016. Fingers crossed William and Kate bring the kiddies along to a polo match sometime this summer — there’s something so sweet about seeing the British royal family off-duty!

4. The baby’s first Buckingham Palace appearance

Every year, royal enthusiasts look forward to one key event: Trooping the Colour. The special event, which celebrates the Queen’s birthday, gives us mere peasants the chance to see the modern monarchy in their element — big hats, bright colors, royal waves, and all! It’s also a chance to see Queen Elizabeth in action in her role of “Gan-Gan” to her great-grandchildren.

The royal baby will probably be too young to attend this year, but we may get a glimpse inside the palace’s walls with Nanny Maria Borrallo giving the kids a peek behind the curtain. Before you sigh at the thought of waiting until 2019 to see Baby Cambridge on the balcony, we could get some baby action at Harry and Meghan’s royal wedding on May 19. Since the newborn will only be a few weeks old then, Kate may bring out the stroller — you never know!

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This post was written by Chloe Lal. It originally appeared on our sister site, Now to Love.