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Blac Chyna proves her butt is good for Rob Kardashian's business, too

For Cailyn Cox, writing isn't just a hobby, it's her life. Passionate about Hollywood, she makes it her mission to find the most entertaining celebrity gossip for SheKnows readers. And when she's not enthralled in the celeb world, she's ...

Blac Chyna celebrates Instagram achievement with a NSFW pic and a nod to bf Rob Kardashian

Blac Chyna is great for Rob Kardashian's confidence (and she's reportedly helped him reconnect with momager Kris Jenner), but she may also be great for his business ventures.

More: Rob Kardashian and Blac Chyna already have a sex tape offer on the table

On Wednesday, Chyna took to Instagram to celebrate the fact that she now has 5 million Instagram followers (more than her new boyfriend), and she did so with a picture of her butt — and socks from Kardashian's sock line.

The NSFW snap shows Chyna's big booty taking center stage, but you can also see Kardashian's socks peeking out from underneath, which read "stay" and "trill." And it looks like there are a lot of people who want some of Kardashian's socks after this picture.

5 milli

A photo posted by (@blacchyna) on

"Loving Rob socks ... They're awesome!" foodpage50 wrote.

More: Rob Kardashian's new relationship is helping him reconnect with Kris Jenner

"The socks are dope too," bosslady_rae shared.

Commenter hay_shaniya3194 was inspired by the picture and now wants her own socks. She wrote, "I wanna get socks like this so I can take a picture like this."

While fan sadeeya13 simply wrote, "Bae's socks!"

So, it looks like Chyna is not only good for Kardashian in the sense that she is bringing him out of his shell, but she could also be very good for business (at least in the promotional sense).

More: New Blac Chyna arrest details are worse than we thought

Do you think Blac Chyna and Rob Kardashian are great together? Let us know your thoughts in the comments below.

Before you go, check out our slideshow below.

Blac Chyna celebrates Instagram achievement with a NSFW pic and a nod to bf Rob Kardashian

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