FINLAND’s party-hard PM Sanna Marin apologised today after a photo emerged of two topless women kissing at her summer palace. The saucy snap heaped yet more pressure on her after she was filmed grinding on a model and was forced to take a drug test after twerking at a “wild” private party. Twitter/@TRetrospectiveTwo of Sanna Marin’s influencer pals posed topless at a party in her official residence[/caption] ReutersSanna Marin apologised for the ‘inappropriate’ picture[/caption] Finnish GovernmentThey partied at the taxpayer-funded summer palace at Kesäranta[/caption] Mum-of-one Ms Marin, 36 – one of the world’s youngest leaders – is fighting off claims from opponents she is “immature” and not in full control of running the country. However she has been boosted by women across the world posting videos of themselves dancing in support. Now a photo circulating on social media has cast light on yet another boozy bash – this time at Kesäranta, the prime minister’s taxpayer-funded seaside residence in Helsinki. It shows two well known influencers sharing a snog while covering their bare chests with a “Finland” sign taken from the palace. READ MORE ON the 'party pm' PARTY PM Finnish ‘party’ PM reveals drugs test result after viral twerking & grinding vids 'RAINBOW CHILD' Who is Sanna Marin? The world's youngest Prime Minister Ms Marin confirmed it was snapped during a private party with friends after a music festival in July. She said: “We had a sauna, swam and spent time together.” And she added: “In my opinion, the picture is not appropriate. I apologise for it. “That kind of a picture should not have been taken but otherwise, nothing extraordinary happened at the get-together.” Most read in News GUNNED DOWN Girl, 9, shot dead after man burst into home while being chased by gunman FATAL BLOW Gran knifed to death while trying to 'break up pub fight' 6 miles from shooting HELL HOUND Woman walks massive BEAST as shocked onlookers are convinced it's a GoT wolf BUS PLUNGE 4 tourists dead & 15 injured as tour bus plunges 330 feet down cliff edge FIND HIM Hunt for balaclava-clad gunman who killed Olivia, 9, after opening fire at home NEST CONTROL Spiders set to invade homes across the country - here's how to stop them It comes after video emerged of Sanna grinding with glamorous ex-model Sabina Särkkä on a nightclub dance floor in the early hours. Other clubbers watched in astonishment as the pair wrapped their arms round each other and the PM writhed with one leg between Sabina’s. It was reportedly filmed at trendy nightspot Klubi on the same night Sanna was seen dancing intimately with pop star Olavi Uusivirta. Olavi, 38, later denied having an affair with the married PM and insisted they are “just good friends”. On Friday she agreed to take a drug test – paid for herself – following noisy demands from opposition MPs. It came back negative on Monday, her office said. But critics pointed out the length of time that had elapsed since another private party where she was filmed dancing and singing with showbiz pals including a rapper and a TV star. PARTY PM In a press conference last week, Marin said she had been drinking lightly on the night in question but had not taken drugs and was always in an appropriate condition to “lead the country”. An earlier leaked video posted on social media showed Ms Marin with Finnish singer Alma, rapper Petri Nygard, TV host Tinni Wikstrom, along with social media influencers and MPs from her own Social Democratic party. The clip was published by Finnish tabloid Iltalehti and shows the PM dancing, singing and drinking with pals in what appears to be an apartment. At one stage someone off-camera refers to “powder gang”, allegedly as alluding to cocaine, although Ms Marin strenuously denied seeing any drugs at the bash. She has defended her behaviour and insists she has nothing to hide, adding that she “resents” the fact the footage of her in a “private space” has been leaked. “I’m disappointed that it has become public,” she said. “I spent the evening with friends. Partied, pretty wild, yes. Danced and sang.” She added: “I have not used drugs myself, or anything other than alcohol. “I’ve danced, sung and partied and done perfectly legal things. I have also not been in a situation where I would know that others are doing it that way.” Amid a political row, many have come to her defence and accused her critics of double standards. “Why can’t she party after work? Do we expect our leaders not to be human beings?” tweeted Ashok Swain, a professor at Uppsala University in Sweden. Spanish politician Iratxe García Pérez said: “How shocking!!! A young politician who does her job and enjoys her private life… Why can’t a young woman have fun? Read More on The Sun SLIP IT IN I'm a hotel expert - why you should ALWAYS wear the free slippers AISLE SAY You’ve been shopping all wrong - ‘secret’ aisle where food is up to 50% cheaper “I can’t stand gender double standards. All my support to @MarinSanna.” Ms Marin has said previously she and other politicians have faced unfair criticism because they are women. Sanna Marin dancing with former beauty queen Sabina SärkkäTwitter InstagramSabina Särkkä is a social media influencer and former model[/caption] Twitter/visegrad24On the same night the party-loving PM was seen with pop star Olavi Uusivirta[/caption] Jonas Lundqvist / trendimagThe 36-year-old PM has been in the limelight for her partying[/caption] Not known, clear with picture deskLeaked video showed her twerking with celeb pals[/caption] The Finnish leader took a test to dispel rumours she had been taking drugsRex