Pippa's gun pal is a hot-shot lawyer - The Sun

The fun-loving barrister was snapped waving a gun around beside Prince William's smirking sister-in-law as he drove her in an Audi convertible in Paris at the weekend.

In party pictures seen by The Sun Rabillard, 36, larks about with no trousers on while clutching a drink and staring wild-eyed at the lens. In another pose he hugs three pretty girls — as one bites his face.

Last night he and Pippa, 27, were both facing a grilling from cops over their shocking antics — as France reels from a series of shootings.

Hours before the car ride, the royal bridesmaid had been at a decadent fancy dress party — where she was seen SNOGGING a French hunk called Antoine De Tavernost.

The bash featured dwarfs serving champagne, a man dressed as a cardinal carrying a copy of the Kama Sutra sex book, and a stripper dancing to God Save The Queen. Pippa told a journalist: "I'm here to enjoy myself."

Pippa and her fella were said to have left the party at 2.30am to go to Le Schmuck restaurant, then on to Regine nightclub.

Hours later she was being driven to catch the Eurostar home by Rabillard and two chums when he waved the gun.

The hot-shot lawyer, who works for a top US law firm on the swanky Champs Elysee, is a regular on the Paris party circuit.

He was called to the bar in 2005 and lives in a £2,000-a-month penthouse close to his work.

Brought up in Paris and educated at one of the city's top universities, he speaks English and German as well as his native French.

Friends say he is a regular at nightclubs in London, as well as on the French Riviera and in the Alps.

A source added: "Romain is a hard-working lawyer but he likes to enjoy himself and is well known on the Paris party scene. He likes being the centre of attention."

Last night it was still not clear if the gun Rabillard waved around in front of Kate's grinning little sister was real.

If it was, brandishing it in a public place is punishable by up to seven years in jail "for all parties involved".

If it was fake, the maximum is two years.

The photographer it was pointed at is still "considering his options" over whether to make a formal police complaint.

The gun-waving shame comes weeks after three kids were among seven people shot dead in Toulouse.

Rabillard was not available for comment last night.

A pal said: "He is lying low."

r.phillips@the-sun.co.uk