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KATY Perry revealed her baby bump has grown larger in recent weeks as she appeared in YouTube’s Class of 2020 graduation livestream in a skin-tight white dress.

The 35-year-old pop star is with a baby girl - her first with fiancé .

 Katy showed off her growing baby bump during the Class of 2020 YouTube livestream
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Katy showed off her growing baby bump during the Class of 2020 YouTube livestreamCredit: YouTube
 The singer wore a skin-tight dress that flaunted her growing bump
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The singer wore a skin-tight dress that flaunted her growing bumpCredit: YouTube
 Katy sang her latest song, Daisies, to the graduates
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Katy sang her latest song, Daisies, to the graduatesCredit: YouTube

 wore a body hugging ensemble and her bump appeared bigger than ever.

The mother-to-be glowed as she led the changing of the cap tassel - a gesture do to celebrate the end of their schooling.

“I want everyone around the globe to graduate at once.

"No matter where you are, remember the tassel goes from right to left,” she instructed the viewers as people worldwide are watching who might have different customs.

She then told all family members to “get their phones out” as she counted down the big moment from “3…2…1…”

 Katy led the changing of the graduation cap tassels for students worldwide
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Katy led the changing of the graduation cap tassels for students worldwideCredit: YouTube
 The Class of 2020 from all over the globe participated in the ceremony
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The Class of 2020 from all over the globe participated in the ceremony

Hundreds of graduates are then shown on screen flipping their tassel from one side to the other.

After the students had their time to celebrate, the judge broke out in song.

She first performed her latest single, Daises, with her baby bump on full display.

The blonde pop star then transitioned into a powerful rendition of her 2010 inspirational hit, Firework.

 Katy sang her 2010 hit Firework to uplift her fans' spirits
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Katy sang her 2010 hit Firework to uplift her fans' spiritsCredit: YouTube
 The singer danced around barefoot as she rocked her body-hugging outfit
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 The singer danced around barefoot as she rocked her body-hugging outfitCredit: YouTube
 She urged the young hopefuls to "celebrate the accomplishment of graduating"
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She urged the young hopefuls to "celebrate the accomplishment of graduating"Credit: YouTube

Katy danced around barefoot and even cradled her stomach in one moment during the performance.

The Roar songstress then shared a message of encouragement for the students.

"I hope in the midst of all that is happening in the world, you can take a moment to celebrate the accomplishment of graduating.

"You are the future, and I know you will take everything you’ve learned to make the world a better place. Never let them change you," she said to the Class of 2020.

Katy and Orlando are expecting their first child together later this Summer.

 Orlando and Katy are expecting their first child together later this Summer
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Orlando and Katy are expecting their first child together later this SummerCredit: Getty Images - Getty

The baby will be the Lord of the Ring's actor second kid, as he shares nine-year-old son, Flynn, with ex wife Miranda Kerr.

They recently spent Memorial Day Weekend together in her hometown of Santa Barbara, California.

She once again during the holiday beach outing, as she wore white floral one-piece swimsuit.

As Katy walked from the sand to her care, she protected her face in a large floppy sun hat, while she carried her pet pooch Nugget.

 The couple has dated off-and-on since January 2016
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The couple has dated off-and-on since January 2016Credit: Getty - Contributor

Orlando, 43, was nearby loading surfboards onto the vehicle.

The superstar couple first began dating in January 2016 but split one year later.

However, they rekindled and announced their engagement on Valentine's Day 2019.

Katy Perry, Beyoncé, Taylor Swift, Lizzo, JLo and more stars celebrate the Class of 2020 in YouTube's live graduation
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