Cardi B and Megan Thee Stallion React to 'WAP' Debuting at No. 1: 'I Did Not See This Coming'

Cardi B/Youtube Cardi B and Megan Thee Stallion

Cardi B and Megan Thee Stallion are beyond thrilled at the success of their recent collaboration.

On Monday, the rap superstars reacted to the news that "WAP" debuted at the top spot on the Billboard Hot 100 chart, and thanked fans — as well as each other — for their support in a series of social media posts.

"Number f—in' one !!!!!NUMBER 1 !!!My 4th number 1 on @billboard hot 100, Cardi wrote in an Instagram post alongside a video of her reacting to the news. "I'm just so thankful I want to hug the LORD."

"Thank you soo much @theestallion .I don't even know how to thank you ,I wish I can give you a big ass hug !!! Thank you to my fans Megan fans,Thank you the world for listening .Im just soooo thankful I can't even type it .Imma get like a bad bitch and tell ya later.Love ya WAAAAAAAPP," she added.

Megan shared a reaction of her own, also writing on Instagram, "Me and cardi just got off the phone screaming 😭😭😭."

"FIRST FEMALE RAP COLLABORATION IN HISTORY TO DEBUT AT NUMBER 1 😭😭😭 God is so great 🙏🏾 THANK YALL !!!"

She added: "@iamcardib thank you for all your words of encouragement, thank you for all the laughs, & thank you for having me on the record 💕💕💕💕 #WAP."

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In a follow-up post on Monday, Cardi added, "Breaking pop records! HIP HOP DID THAT !! I'm sooo f—in' happy .Im so proud of us !Yooo God is sooooo big .I did NOT see this coming I wasn’t even expecting all this yooo.Wap Wap Wap!!!!! Thank you @theestallion !!!GETTING DRUNKYYY EARLY !!!!"

Cardi and Megan's much talked about collaboration climbed all the way to the top of the Billboard chart on Monday, knocking Harry Styles' "Watermelon Sugar" out from the top spot.

"WAP" is Cardi's fourth song to earn the coveted No. 1 spot — following "Bodak Yellow," "I Like It," and "Girls Like You" — and Megan's second after her "Savage" remix, featuring Beyoncé, topped the Hot 100 earlier this year in April.

RELATED VIDEO: Cardi B and Megan Thee Stallion's Sexy 'WAP' Music Video Includes a Kylie Jenner Cameo

Cardi B and Megan Thee Stallion's Sexy 'WAP' Music Video Includes a Kylie Jenner Cameo

The music video also features cameos from Normani, Rubi Rose, Sukihana, Rosalía and Mulatto

"WAP" also racked up the most first-week streams for a single with 93 million listens, according to Nielsen Music/MRC Data, as reported by Billboard.

The song, as pointed out by Megan in her celebratory post, was also the first female rap collaboration in history to debut at the top spot on the music chart.

On Twitter last week, Cardi previously shared that if the song debuted at No. 1, she would "die for a couple seconds and come back to life."

RELATED: The Best Style Moments from Cardi B and Megan Thee Stallion's New 'WAP' Music Video

Cardi B/YouTube Cardi B and Megan Thee Stallion

The Aug. 7 release of the single and its accompanying music video was met with both praise and criticism thanks to its sexually explicit lyrics and proactive themes.

The inclusion of reality star Kylie Jenner sparked an online petition to have her removed from the clip and Tiger King's Carole Baskin also slammed the video for its racy content and use of real wild cats, even though they were inserted with the help of technology.

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Sharing her inspiration for the project, Cardi said in an installment of New Music Daily on Apple Music that she wanted to disprove the misconception that women can't support other women in the industry.

"I feel like people be wanting to put female artists against each other. ... You know what I'm saying?" Cardi explained. "Every single time I feel like there's a female artist that's coming up ... I always see like little slick comments like, 'Oh, they taking over your spot. They taking over this. They taking over that.' And it just makes me feel like, damn, why it had to be like that? Because I actually like shorty music a lot. Why does it even have to be like that?"