Cardi B loves being open with fans, and she's taken to Twitter to reveal that when it comes to making a huge music video like WAP, her collaboration with Megan Thee Stallion, you've got to be ready to invest.

Cardi tweeted that the video for WAP cost "a M", aka $1 million. However, it's fair to say that it was worth it, with the video setting records all over the place, as well as helping the song reach the top of the charts.

It featured cameos from the likes of Kylie Jenner, Normani, Rosalía and more, and became one of the biggest music moments of 2020. 

Naaaa honey ....Money cost 400K ,Please me Cost 900K ,Wap Cost a M ! https://t.co/7M2hFezoe9

— iamcardib (@iamcardib) January 13, 2021

It's looking like WAP will do pretty well in this year's Hottest 100, given how big the track (and the video) was last year, so make sure you get your votes in by Monday  January 18th.

Cardi also revealed that the video for Bodak Yellow cost only $15,000USD. Given it was the track that set her on the path to superstardom, that seems like a great investment.

Cardi tweeted, "Fun fact : Bodak yellow music video cost me 15 thousand dollars .I was in Dubai and I said ....I gotta fly picture (videographer) out here ...BOOM BOOM BANG ! Ya know the rest ."

Fun fact : Bodak yellow music video cost me 15 thousand dollars .I was in Dubai and I said ....I gotta fly picture (videographer) out here ...BOOM BOOM BANG ! Ya know the rest .

— iamcardib (@iamcardib) January 13, 2021

 Cardi told a story about not wanting to appear like a "small artist" in front of her now-husband Offset on the set of the Lick music video - and she only told him about it after the fact.

I think like 15K .Offset had a 40K wardrobe fee for videos so I had to pay it out my pocket cause I didn’t wanna look like a small artist with a tiny ass music video budget .....I told him like a year later ???? https://t.co/sEnPPkMkm1

— iamcardib (@iamcardib) January 13, 2021

Ugh it was very ?.We shot the video at a casino in a Holiday Inn in Jersey and I was embarrassed cause it look so low budget and Set was about to pull up and I barely knew him so I was so shy and when he kissed me on camera my heart sinked?Every1 was like ???? https://t.co/mHsVghmT2m

— iamcardib (@iamcardib) January 13, 2021

READ MORE: Someone On Reddit Has Put Together A Drinking Game For This Year's Hottest 100 And It Could Get Messy

Cardi is one of the most honest artists in the game right now - and if you want to stay up to date with her latest thoughts, then it's definitely worth following her on Twitter. You never know what you might learn!