Pictured relaxing in a bubble bath and posing with friends, this is the woman who blew herself up to become Europe's first female suicide bomber during the siege of Saint-Denis.

A series of revealing new pictures of Hasna Ait Boulahcen, 26, have emerged in which the party-loving boozer, who had no interest in religion or the Koran according to her brother, is seen relaxing.

Ait Boulahcen's head and spine flew through a window in yesterday's anti-terror police gun battle as the suicide bomber screamed, 'help me, help me!' and 'I'm not his girlfriend!', before detonating her explosive vest.

The ferocious gun battle took place north of Paris, where the mastermind of the Paris bombings, her cousin Belgian ISIS fighter Abdelhamid Abaaoud, was killed.

Now her brother has revealed how his suicide bomber sister had no interest in religion, never read the Koran and only started wearing a Muslim face veil a month ago.

Friends also described her as a fun-loving party girl who liked to drink alcohol and was nicknamed 'the cowgirl' due to her love of wearing big cowboy hats.

In a statement brother, who hadn't spoken to his sister for five years and described their relationship as 'complicated',  said: 'She spent her time criticising everything. She refused to accept any advice, she didn't want to sort herself out.

'She was living in her own world. She was not interested in studying her religion. I never saw her open the Koran. She was permanently on her phone, looking at Facebook or WhatsApp.'

'I told her to stop all of this but she would not listen, she ignored my numerous attempts to give her advice telling me I was not her dad, or her husband, and so I should leave her alone.'

Three weeks ago, Ait Boulahcen left the house to live with a female friend in Drancy, a suburb of north east Paris.

Youssouf added: 'On the rare occasions that I spoke to her it was to tell her to behave better, to have a better attitude, to be more easy-going about her strict dress code.

'On Sunday at 7pm she called me because I had called her - and she sounded like she had given up on life.'

Youssouf rushed over in his car to check on her but after waited 15 minutes and got no answer.

'She called me and I put the phone down on her after telling her not to call me any more after the inconvenience she had caused me, getting me to come over for nothing.

'Finally on Wednesday morning I turned on the TV and I learned that she had killed herself, sacrificing the life that the Lord had given.  

'She had been the victim of violence since she was very young - mistreated and rejected - she never received the love she needed.

'From the age of five she was taken into care, so she grew up with a foster family.

'She was happy and she flourished at that point in her adolescence. Then as she grew up she went off the rails. She became reckless, running away and choosing bad company.

'I was never very close to her because we lived apart but during the opportunities I had to talk to her she was full of enthusiasm, although her instability always dragged her down, she was not grounded in her. She went from one life project to another without question.'

Neighbours at the building where Ait Boulahcen's family live in a run-down suburb of Paris said the she had been there three weeks ago.

They said she had a bubbly personality, adding that she was 'outgoing, a bit clueless'. They were shocked to see her face appear on the news.

One neighbour, Hassane, described her as a 'Tom boy' and said she always dressed in jeans, trainers and a black cap until around eight months ago when she started wearing a niqab.

He said: 'She wasn't scared of anyone. She was like a little soldier. She was very lively, very dynamic.  

He said: 'She didn't have a niqab [headscarf] before. She was always in jeans and trainers. She was a very well-spoken girl. She was very respectful.'

The retired 62-year-old said that Hasna was always very helpful and had once carried his heavy shopping for him.

He said Hasna's mother had been comforted by the caretaker in the building and had spent last night crying.

He added: 'I can't believe she's part of this sect. When I heard it I felt sick. She was like all young girls - it was who she was hanging out with.

'We have been tainted by these people that know nothing about Islam.'

Another said: 'She did not look like a suicide bomber and she drank alcohol.'

Moroccan-born Ait Boulahcen's family arrived in France in 1973 and settled in Paris, where she was born in 1989 in Clichy-la-Garenne, a suburb close to Wednesday's gun siege.

She had been brought up in foster families and her parents had separated when she was young, they said.

Hasna's mother, whose first name is not known, lives in a tower block in Aulnay Sous Bois, a suburb 20 minutes outside of Paris.

It is understood that although Hasna visited often, she did not live there permanently.

Friends said she remained 'close' to her father and would regularly visit his home in Creutzwald, Moselle.

Ait Boulahcen studied at Paul Verlaine University in Metz. She repeatedly threatened the French government and expressed her desire to wage jihad, according to Républicain Lorrain.

She was registered as a director of building company, Beko Construction, in Epinay sur Seine, three miles from yesterday's raid. The company was liquidated last year.

Ait Boulahcen detonated a suicide belt following a dramatic police stand off in Saint Denis yesterday.

One witness, known only as Christian, 20, said he heard a woman, thought to be Ait Boulahcen, yelling 'Help me!' after a 15 minute lull in the firefight.

He told Le Parisien: 'The police asked her to identify herself, and to show herself. She held her hands up but she didn't reveal her face.

'The police shouted at her: 'Keep your hands in the air!' They told her: 'We're going to shoot.'

'The police were firing from the roof of the building opposite. Suddenly there was an enormous explosion. It was probably the woman who blew herself up.

'The windows shattered. Lots of objects from the apartment were thrown into the street, pieces of human flesh as well. They are still there. You can see a bit of the head, of skin, of ribs.'

The bodies recovered in the raid were badly mangled and part of Ait Boulahcen's spine landed on a police car, slowing the identification process, an official said.

Jean-Michel Fauvergue, 56, the French anti terror commander who led the raid told of the gruesome moment he woman's head 'fly through a window'.

He said: 'After a long firefight, we heard a loud explosion. The windows of an apartment were shattered, blown from inside to outside.

'That's when we saw a human body, a woman's head, fly through the window and land on the pavement, on the other side of the street.

'A suicide bomber had just exploded. The blast was so devastating that a supporting wall moved.'

Mr Fauvergue said a sniper shot a male terrorist who was spraying the police with bullets but 'despite this, the shots [from the terrorist] continued.

The sniper, who believed they were protecting a third man inside, launched a grenade into the building.

Mr Fauvergue said the terrorists were 'real professionals' who were 'super motivated'. He said his team fired at least

5,000 rounds and a number of grenades using rifle mounted launchers during the siege.

Ait Boulahcen's cousin Abaaoud was also killed in the raid, French prosecutors confirmed today after identifying his corpse based on skin samples.

Eight people were arrested in the raid, including two found in the rubble of the building close to the Stade de France, where last Friday's attacks started with suicide bombings during a France-Germany football international.

Mr Fauvergue told Le Parisien how officers were wounded by grenades thrown by the terrorists and Diesel, the police dog sent in to sniff out explosives, was killed.

Mr Fauvergue said: 'We were subjected to heavy fire, with real professionals facing us. They were shooting in bursts, or in single shots, in turn, so that their fire didn't stop.

'This also allowed them to save their ammunition. They were super motivated. This first phase lasted more than half an hour.

'Grenades were thrown at our feet. These caused numerous wounds to the arms and legs of the Raid commandos. We replied in kind. The intensity of their firing was calmer. It became sporadic.

'We sent a dog in to explore the place. He was killed. There's little doubt that he saved the lives of police officers who were about to enter.'

Describing the death of the male terrorist, Mr Fauvergue said: 'The situation wasn't clear. Sure we had them 'fixed', but we still didn't know how many were inside.

'Snipers engaged fire, hitting a terrorist. Despite this, the shots continued. Two theories - he was fighting for his life, or there was a third man inside. Our snipers thus launched grenades to saturate the space.

'The building was very dilapidated. At different times of the assault, floors gave way, just like the water pipes.

'We couldn't advance. We concentrated on a slower approach, using tracked robots which were blocked by the rubble. Outside, drones equipped with cameras watched the skylight. A second dog opened the way.

'We also came down a floor, entering the apartment on the second floor, situated directly below. It was there that we came across a body.

'Poles with cameras on the end allowed us to see what was happening upstairs. It was chaotic.'

President Francois Hollande has declare a State of Emergency in France, warning that further terrorist attacks are likely.