ID=3169893The 3-month-old royal baby was christened today, ritually welcomed into the Church of England as Prince George Alexander Louis of Cambridge, in a private ceremony for close family and friends in the historic chapel of a London royal palace.

His parents, Prince William and Duchess Kate of Cambridge, grandparents, great-grandparents and seven godparents looked on as the baby was baptized by the Archbishop of Canterbury Justin Welby, in an antique silver font in the Chapel Royal of St. James's Palace as a small scarlet-and-gold-clad choir sang hymns.

The christening, blending tradition and innovation, was yet another display of the young royals' savvy approach to duty, history, modernity and informality, obvious since their engagement in 2010.

The baby appeared to be happy and not crying before the ceremony began, as his royal relatives and godparents arrived at the chapel.

The guest list for the ceremony was short, just 22 people and only five royals: great-grandparents Queen Elizabeth II and Prince Philip, grandfather Prince Charles and his wife, Camilla Duchess of Cornwall, and Prince Harry. Also there were maternal grandparents Michael and Carole Middleton, Kate's siblings Pippa and James Middleton, plus the closest relatives and oldest friends of the Duke and Duchess of Cambridge.

The altar in the Chapel Royal at St. James's Palace in London, the day before Prince George of Cambridge was christened.(Photo: John Stillwell AP)

The godparents, as disclosed by the palace six hours before the ceremony, include the single royal, William's cousin, Zara Phillips Tindall, the queen's granddaughter and daughter to Princess Anne the Princess Royal (who is in Canada). An Olympic equestrian champion, she's married to ex-rugby player Mike Tindall and is pregnant with her first child.

The other godparents are Oliver Baker, an old college friend of the couple; Emilia Jardine-Patterson (formerly d'Erlanger), a high school friend of Kate's and old friend to Will, who introduced them; Hugh, Earl Grosvenor, son of the Duke of Westminster and old friend of Will and Harry; Jamie Lowther-Pinkerton, the couple's former private secretary who still advises them and whose son was in the royal wedding; Julia Samuel, a close friend of Will's late mother, Princess Diana; and William van Cutsem, one of Will's closest childhood friends and son of Prince Charles' close friend Hugh van Cutsem, who died a few weeks ago. The van Cutsem family provided a refuge for William and Harry during their parents' bitter divorce; Will is godfather to van Cutsem's daughter Grace who was in the royal wedding.

The list of guests was notable for the absence of such senior royals as the queen's three other children, Prince Andrew, Princess Anne and Prince Edward, all of whom were busy with royal duties elsewhere. The royal couple sought a low-key ceremony in contrast to their wedding extravaganza in 2011.

A giant christening card, signed by 5,000 Christians, for Prince George outside the Chapel Royal of St James's Palace in London ahead of the royal baby's christening.(Photo: Sang Tan AP)

Several of the godparents' names were a surprise; others had already been discussed earlier in British media reports about how Will and Kate broke with tradition in choosing old friends as godparents for their first child, third-in-line to the throne, rather than foreign royals, as with William himself. Prince Charles, for instance, had nine official godparents, including two kings, one queen, one princess and one prince.

After the ceremony, the palace said, Prince Charles hosted a tea party at his London residence, Clarence House, where the guests were served the traditional slices of christening cake, a tier taken from Will and Kate's wedding cake, an eight-tier fruit-infused confection designed by celebrated pastry maker Fiona Cairns.

Photographers were stationed outside the palaces to cover the arrivals and departures but did not have access to the chapel ceremony.

Duchess Kate and Prince William arrived by car, he in the front seat, she in the back with the baby in a car seat. She was wearing a cream-colored bespoke dress by Alexander McQueen and a matching fascinator-type hat by Jane Taylor, according to a tweet by the Daily Mail's royal reporter, Rebecca English.

The historic picture of the queen and three generations of her heirs (the first such picture since Queen Victoria in 1894) will be released by the palace Thursday morning. (The palace said Tuesday the photographer will be Jason Bell, 44, best known for his Hollywood celebrity portraits in Vogue and Vanity Fair.)

It was raining heavily in London today but that didn't stop royal fans, some outfitted in colorful gear, from gathering outside the chapel early, some as early as days before. Beneath a blue tarp, seven die-hard royalists slept overnight on the sidewalk in anticipation.

"My future king knows I've been here all night," Julie Cain, 50, of New Castle, said. "It gives you a sense of pride."

Sitting in lawn chairs set up across from where the queen will enter the christening, and adorned with Union Jack paraphernalia, these well-wishers have followed royal family events for decades.

"This is a historic moment," said John Loughrey, 58, of London, a self-proclaimed "Diana super fan." "Princess Diana will be giving her special love today."

Decked out in a Union Jack suit, Terry Hutt, 78, spent hours this morning stringing British flags to the barricades across the street from St. James's Palace. Hutt, who spent 12 days outside the Lindo Wing awaiting Prince George's birth in July, has followed every royal event since he met the late Queen Mother Elizabeth at age 4.

"I'd like to think that I've become a royal family godparent of sorts," Hutt said.