Louis Tomlinson's sister Lottie flaunts epic derrière in skimpy bikini during trip to Bondi Beach... one day after sparking romance rumours with Love Island Australia's Dom Thomas

She's currently in Australia to launch her new tanning range, Tanologist.

And Lottie Tomlinson wasn't afraid to show off her gorgeous sun-kissed glow this week, as she paraded her sensational bikini body in Bondi Beach, Sydney.

The 21-year-old makeup artist commanded attention in a sultry black two piece, which showed off her tiny waist and slender pins to perfection.

Bondi babe! Lottie Tomlinson (pictured) commanded attention in a sultry black two piece, which showed off her tiny waist and slender pins to perfection

Bondi babe! Lottie Tomlinson (pictured) commanded attention in a sultry black two piece, which showed off her tiny waist and slender pins to perfection

The sister of One Direction legend Louis Tomlinson then spun her body around, to show off her pert derrière in the skimpy bikini. 

She raised her hand in the air in the sultry snap, as she gazed seductively at the camera. 

'Raise your hands if you wanna be swapping winter clothes for 'kinis!' the British beauty captioned the sassy shot, before revealing her bronzed glow was down to the 'extra dark mousse' from her range. 

Cheeky! The sister of One Direction legend Louis Tomlinson then spun her body around, to show off her pert derrière in the skimpy bikini

Cheeky! The sister of One Direction legend Louis Tomlinson then spun her body around, to show off her pert derrière in the skimpy bikini

One day before, Lottie launched her range at a star-studded party at Sydney's seaside beach club, The Island. 

It was there she sparked romance rumours with Love Island Australia hunk Dom Thomas. 

Dom, 27 - who ended his relationship with fellow Love Island star Tayla Damir in June - shared a picture of the two posing together, captioned: 'From outta nooooowhere,' 

Hot new couple? Lottie Tomlinson (right) sparked romance rumours with Love Island Australia hunk Dom Thomas (left) as the pair attended her tanning launch event in Sydney on Tuesday

Hot new couple? Lottie Tomlinson (right) sparked romance rumours with Love Island Australia hunk Dom Thomas (left) as the pair attended her tanning launch event in Sydney on Tuesday

Lottie shared the same image to her Instagram story, adding: 'I would like to couple up with this boy because...' 

However, Dom soon appeared to deny the pair were anything more than pals - responding to a comment asking if they were dating with: 'Hahaha, nahhh.' 

During the outing, Lottie donned a thigh-flashing white dress which she teamed with a pair of leather boots. 

Peach princess! Lottie commanded attention at the star-studded event, sporting a thigh-flashing white dress teamed with a pair of leather boots

Peach princess! Lottie commanded attention at the star-studded event, sporting a thigh-flashing white dress teamed with a pair of leather boots

She left her eye-catching peach waves to gently cascade down her back, and accentuated her features with lashings of flawlessly applied make-up.

The Instagram influencer is currently believed to be single, after splitting from UK reality star Sam Prince back in September.

The pair broke things off shortly after they celebrated their first anniversary together last month, according to The Sun.

Split: Louis Tomlinson's sister Lottie and UK reality star Sam Prince reportedly called quits on their relationship after one year of romance back in September

Split: Louis Tomlinson's sister Lottie and UK reality star Sam Prince reportedly called quits on their relationship after one year of romance back in September

Louis Tomlinson's sister Lottie wears bikini on Bondi Beach

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