Jeff Bezos and Lauren Sanchez are 72 hours into their wedding celebrations, but the party keeps on going for the £177billion man and his new bride

Sealing their love with a kiss, Lauren Sanchez and Amazon boss Jeff Bezos headed to their final party in Venice last night after a three-day wedding extravaganza.

Waving to crowds from her balcony at the Aman Venice Hotel, the new Mrs Bezos stepped out in a figure-hugging pink embellished dress with a fishtail bottom.

The happy couple shared a smooch for all to see before whizzing away down a Venice canal.

Oprah Winfrey, Kylie and Kendall Jenner and Leonardo DiCaprio were also seen making their way to former medieval shipyard the Arsenale to close the nuptials.

A flotilla of paparazzi boats followed Jeff and Lauren and other VIPs as they made their way along the lagoon in private water taxis.

Around 200 of the world’s wealthiest people were gathering for a final night’s fun. Sir Elton John and Lady Gaga were expected to be among a host of performers.

Bezos, 61, worth £177billion, has taken over the Italian city for a wedding estimated to have cost up to £40million, small change for the world’s third richest man.

But 700 demonstrators gathered at Santa Lucia railway station carrying protest banners and waving inflatable crocodiles.

The demo was organised by the No Space For Bezos group, with some carrying Amazon boxes with the words: ‘Ordered, Shipped, Delivered, Rejected.’

But Bezos and Sanchez, 55, cared not a jot. It was the second marriage for both and they have seven children between them.

Earlier, they blew kisses on a visit to Harry’s Bar yesterday – and give a first glimpse of their understated wedding rings.

Sanchez’s simple wedding band was in stark contrast to the 30-carat $3million pink diamond she sported after Bezos asked her to marry him two years ago.

In the run-up to Friday’s ceremony, that sparkler was switched to her right to make way for an upgrade – an even larger, brilliant-white diamond, estimated at 35 carats and worth $10million.

They married in a luxurious ceremony on San Giorgio Maggiore island.

Vogue later released a set of pictures, with a braless Sanchez posing in her new husband’s unbuttoned wedding shirt.

The Dolce & Gabbana tuxedo shirt was similar to the one he wore at Friday’s ceremony.

The photoshoot took place earlier this month, the day after Sánchez and Bezos were at the Dolce & Gabbana atelier in central Milan for their final fittings.

She revealed her wedding dress was inspired by the high-necked lace wedding dress Sophia Loren wore to marry Cary Grant in the 1958 film Houseboat.

She told the magazine that a few conventions were to be honoured, including the groom not seeing the bride just before the wedding day.

Her Dolce & Gabbana Alta Gioielleria Miracolo earrings, four diamonds cut from a single stone and inlaid in white gold, were her something borrowed.

Her something blue was from Blue Origin, the spaceflight she took with five other women, including the singer Katy Perry, that was arranged by Bezos.

Sánchez said she carried a secret souvenir up in the rocket so she could bring it back for Bezos ‘because it was one of the most profound experiences I’ve had in my life.’

She credited her new husband for ‘transforming my life’.