Christina Aguilera celebrates fiance Matthew Rutler’s 39th birthday in Las Vegas with friends Anitta and Dita Von Teese

Christina Aguilera shared some photos from her fiancé Matthew Rutler’s birthday party in Las Vegas on Instagram on Sunday.

The MasterClass manager turned 39 on April 5, while his 43-year-old fiancée Aguilera shared photos from the couple’s birthday party in Sin City.

Aguilera — who recently revealed sex secrets — shared nine photos and one video in a new post on Sunday, captioned: “Midnight things.”

The first image was a black and white photo of a smiling Aguilera posing with her friend and fellow singer Anitta.

She also shared a Polaroid photo of Anitta and makeup artist Vinicius Duarte in conversation.

Christina Aguilera shared some images from her fiancé Matthew Rutler’s birthday party in Las Vegas on Instagram on Sunday

The MasterClass manager turned 39 on April 5, while his 43-year-old fiancée Aguilera shared photos from the couple's birthday party in Sin City

The MasterClass manager turned 39 on April 5, while his 43-year-old fiancée Aguilera shared photos from the couple’s birthday party in Sin City

Then there was a video of the conversation with Duarte who could be seen laughing as Anitta continued talking.

The next slide was a black and white Polaroid photo of Xtina and her partner since 2014 admiring his birthday cake.

Next was a color photo of the couple admiring the impressive birthday cake as they celebrated in Las Vegas.

In the next image, Aguilera posed with another famous friend, Dita Von Teese, wearing a stylish black dress.

Next was a color photo of the first black and white photo of Xtina and Anitta, both dressed in all black.

She also shared an image from her music video Can’t Hold Us Down, along with a black and white photo of Rutler blowing out the candles on his birthday cake.

The final image was a black and white photo of the cake being cut, with the caption “Happy Birthday Matt!”

Christina Aguilera left jaws dropping when she made a series of provocative revelations about her experimental sex life during an X-rated episode of the Call Her Daddy podcast in April 2023.

Then there was a video of the conversation with Duarte who could be seen laughing as Anitta continued talking

Then there was a video of the conversation with Duarte who could be seen laughing as Anitta continued talking

The next slide was a black and white polaroid photo of Xtina and her partner since 2014 admiring his birthday cake

The next slide was a black and white polaroid photo of Xtina and her partner since 2014 admiring his birthday cake

In the next image, Aguilera posed with another famous friend, Dita Von Teese, wearing a stylish black dress

In the next image, Aguilera posed with another famous friend, Dita Von Teese, wearing a stylish black dress

She also shared an image from her music video Can't Hold Us Down, along with a black and white photo of Rutler blowing out the candles on his birthday cake.

She also shared an image from her music video Can’t Hold Us Down, along with a black and white photo of Rutler blowing out the candles on his birthday cake.

During the chat, the Dirrty hitmaker, 43, revealed she’d had sex on a commercial flight ‘under blankets’ and ‘bent over a soundboard’ in a music studio – before shocking host Alex Cooper by confessing her preference for a specific gender action.

Xtina – who has been engaged to Matthew Rutler since 2014 – started the chat by revealing that she enjoys performing fellatio and said it’s ‘really important to be with a partner where you can really explore.’

She said: ‘Sexuality is a very specific thing, so what one man likes, another doesn’t’ – while adding intimacy ‘has many different levels’.

The star also described losing her virginity, saying, “It’s so funny that I gave this persona because I was probably the last person to lose my virginity.