Paris Hilton celebrates her 40th birthday with Carter Reum and friends as they throw backyard party

Paris Hilton has had quite the year, with her revealing documentary and her recent engagement to Carter Reum.

And the pop culture icon is keeping the celebration going, as she marks another important milestone.

She celebrated her 40th birthday Wednesday with her husband-to-be and some friends, as they threw a backyard party, complete with a Barbie birthday cake and pink churros… a month after her birthday.

Birthday girl: Paris Hilton celebrated her 40th birthday Wednesday with her husband-to-be Carter Reum and some friends, as they threw a backyard party, complete with a Barbie birthday cake and pink churros… a month after her birthday

The 40-year-old stunned in a sparkling yellow turtleneck minidress with a red fur coat, matching stilettos and futuristic chic wraparound red sunglasses.

She hosted the intimate outdoor gathering in the backyard of her Beverly Hills home, which comes with beautiful city views. 

Hilton stood with Reum, 40, as her friends sang her Happy Birthday and a man approached with tall pink cake, which doubled as Barbie’s skirt, lit with sparklers.

Her pool area was lit with pink lighting, and her name was written in pink mylar balloons, as guests posed in front of a pink sequined backdrop and snacked on pink churros.

Backyard party: The 40-year-old hosted the intimate outdoor gathering in the backyard of her Beverly Hills home, which comes with beautiful city views

Backyard party: The 40-year-old hosted the intimate outdoor gathering in the backyard of her Beverly Hills home, which comes with beautiful city views

Stunning display: She stunned in a sparkling yellow turtleneck minidress with a red fur coat, matching stilettos and futuristic chic wraparound red sunglasses

Stunning display: She stunned in a sparkling yellow turtleneck minidress with a red fur coat, matching stilettos and futuristic chic wraparound red sunglasses

Barbie vibes: Hilton stood with Reum, 40, as her friends sang her Happy Birthday and a man approached with tall pink cake, which doubled as Barbie's skirt, lit with sparklers

Barbie vibes: Hilton stood with Reum, 40, as her friends sang her Happy Birthday and a man approached with tall pink cake, which doubled as Barbie’s skirt, lit with sparklers

Pretty in pink: Her pool area was lit with pink lighting, and her name was written in pink mylar balloons, as guests posed in front of a pink sequined backdrop and snacked on pink churros

Pretty in pink: Her pool area was lit with pink lighting, and her name was written in pink mylar balloons, as guests posed in front of a pink sequined backdrop and snacked on pink churros

The event was attended by pals like Whitney Cummings, Presley Gerber, Farrah Brittany, Hannah Stocking and more. 

Stocking wrote on her Instagram Story: ‘Happy birthday to my queen, the icon, and a staple to the community. I f***kn adore you.’ 

The Stars Are Blind artist also received some birthday flowers from friends like Kate Hudson and Rachel Zoe.

Zoe wrote: ‘Happiest belated birthday to one of my favorite warrior women… I love you madly and wish you the most magical year filled with happiness. With love, Rachel Zoe’ 

Hilton recently debuted a new haircut in time for her birthday, after getting styled in a blunt bob for her spring/summer 2021 campaign for Lanvin. 

Flower power: The Stars Are Blind artist also received some birthday flowers from friends like Kate Hudson and Rachel Zoe

Flower power: The Stars Are Blind artist also received some birthday flowers from friends like Kate Hudson and Rachel Zoe

Sweet note: Zoe wrote: 'Happiest belated birthday to one of my favorite warrior women... I love you madly and wish you the most magical year filled with happiness. With love, Rachel Zoe'

Sweet note: Zoe wrote: ‘Happiest belated birthday to one of my favorite warrior women… I love you madly and wish you the most magical year filled with happiness. With love, Rachel Zoe’

New look: Hilton recently debuted a new haircut in time for her birthday, after getting styled in a blunt bob for her spring/summer 2021 campaign for Lanvin

New look: Hilton recently debuted a new haircut in time for her birthday, after getting styled in a blunt bob for her spring/summer 2021 campaign for Lanvin

She wrote on Instagram: ‘I was so inspired by my new @LanvinOfficial campaign that I had my hair cut short. What do you all think about my new look?’

Hilton also inked an exclusive two-year deal with Warner Bros. Unscripted Television, as she launches her new production company Slivington Manor Entertainment.    

She will develop, produce and star in original unscripted TV programming, executive producing alongside veteran media executive Bruce Gersh.

It comes after she said yes to Reum’s proposal last month on her actual birthday, as he popped the question on the beach of a private island, celebrated by her family. 

Hilton celebrated on Twitter, writing: ‘When you find your soulmate, you don’t just know it. You feel it. This weekend, Carter dropped to one knee. & I said yes, yes to forever. There’s no one I’d rather spend forever with.’ 

Wedding bells: It comes after she said yes to Reum's proposal last month on her actual birthday, as he popped the question on the beach of a private island, celebrated by her family

Wedding bells: It comes after she said yes to Reum’s proposal last month on her actual birthday, as he popped the question on the beach of a private island, celebrated by her family