She's been sharing loved-up snaps ever since going Instagram official with her new beau, singer Luis Felber, in June.
And Lena Dunham looked sensational as she rocked a red heart-print swimsuit for another gushing post in honour of her 'kind' fans shared to social media on Monday.
The Girls star, 35, beamed a smile as she made the most of the sweltering UK heatwave and slipped into a funky bathing suit for a garden photoshoot.
Wow! Lena Dunham looked sensational as she rocked a red heart-print swmsuit in a gushing post shared to Instagram on Monday
Lena posed up a storm in her red costume, which featured a stylish tie detail across her ample cleavage.
The star ensured to work all her angles while sunbathing in the garden and let her one-piece's strap fall off her shoulder in another stunning image.
Not forgetting her accessories, Lena donned a bright selection of beaded necklaces as well as a gold bracelet.
Alongside her snaps, Lena penned: 'This is a moment of gratitude- not for the sun (although it sure is sweet after all this London rain, and I thought rain was my thing...)
Work it: The Girls star, 35, posed up a storm as she made the most of the sweltering UK heatwave and slipped into a funky bathing suit for a garden photoshoot
'And not for this new bathing suit (although it's pretty exciting when something is both covered in hearts AND accommodates the ample belly.)
'No, this is gratitude for YOU. It's easy to go down the rabbit hole, yelling about how the internet is mean and false and destroying our social fabric yadda yadda yadda, but this community, right here on the 'gram, has been so consistently loving, kind and connected for such a long time.'
The star continued: 'You've generously allowed me to share my tougher moments and my most sweet ones too and, most essentially for me since
