Teen Mom Cheyenne Floyd celebrates daughter Ryder's 4th birthday with ex Cory Wharton & his girlfrie -

TEEN Mom Cheyenne Floyd reunited with her ex Cory Wharton to celebrate her daughter Ryder's fourth birthday in an epic bash.

Celebrations hosted by the soon-to-be mother of two, who has been busy setting up Ryder's "big girl" bedroom and the nursery for her unborn son, also included Cory's girlfriend Taylor Selfridge and her 11-month-old Mila.

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The blended family came together for the four-year-old's special day, much to the delight of their fanbases who were happy to see them side by side.

In a series of pictures, Cheyenne, her boyfriend Zach Davis, ex Cory, and his girlfriend Taylor - as well Ryder's half sister Mila - cosied up together.

Another sees Cory and his two young daughters posing in front of the impressive two-tier blue cake, topped with a number four candle.

While a third saw the proud dad smiling as he entertained their guests, while the children sat down to eat a range of themed snacks and get their faces painted.

For the birthday celebration, Teen Mom star Cheyenne rented out a play space for the kids to play safely as they mounted tiny carousels.

Tables had been carefully laid out for the group of youngsters, who were each given a party bag to take home, filled with goodies.

Cheyenne filmed the lavish affair on her Instagram stories, showing fans around the set up, which included a small soft play area.

The birthday bash was themed after animated children's series Octonauts with graphic plates, cups stuffed with coloring materials, and hanging decorations. There was also a gold banner that read "Happy Birthday."

In the front of the room was the big table, where Ryder sat in front of her cake topped with Octonauts characters, and a basket full of cake pops.

In another clip from the bash, Ryder could be seen riding the carousel before jumping out of it and dancing for the camera.

The 4-year-old wore a blue tutu with black biker shorts and white tee that had her name written on it. She topped off the look with a blue bow on her hair.

If that wasn't enough of a celebration, Cheyenne then went on to throw her daughter a second, more private affair at her home on Ryder's actual birthday, April 7.

The more private affair was for just the immediate family, as Ryder was pictured with her mom and Zach, as well as Cheyenne's blossoming bump.

A wall of balloons had been set up in the back yard in front of a child-sized table and chairs for the perfect photo opportunity.

Cheyenne said the children passed time by "making slime" and spending time in the sunshine getting "glitter tattoos".

Following the parties, Cheyenne took to Instagram to celebrate her daughter with a series of photos and an emotional post.

"My beautiful girl is four today and I can’t help but reflect on the past years we have had together," she wrote.

"My life was forever changed when I found out I was pregnant with her. I was so nervous for motherhood and our future; how was I going to give her everything she deserved?

"Ryder, you have given my life so much purpose and meaning. Everyday I wake up I am honored to be your mother, to watch you grow, learn, and excel beyond your age.

"My first born, my heart, I owe who I am today to you. Proud mom is an understatement. I love you."

Cheyenne and boyfriend Zach Davis - who have been dating on and off since high school - announced in December that they are getting ready to welcome a baby with a sweet maternity photoshoot.

Just days later, Cheyenne revealed she's having a baby boy.

The expectant couple enjoyed a romantic Valentine's Day together last month, with pregnant mom showing off her expensive gifts of YSL and Prada bags, an extravagant beach picnic, and roses.

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Cheyenne said in one video as she showed off the whole layout: “Zach is so cute. Good job, Zach!”

Over the last few months, the reality star has been updating fans on social media with photos and videos of her growing baby bump, as well as cute snaps of her daughter Ryder giving her bump some love.

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