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Paul, who has a boxing documentary about himself in the works, sealed a second-round KO victory over Robinson at the Staples Center in Los Angeles.
The American will continue his boxing pursuit on Saturday as he steps into the squared circle with ex-UFC fighter Ben Askren at the Mercedes-Benz Stadium in Atlanta, Georgia.
Undisputed women's light middleweight champ Shields, who is undefeated in her 11-fight pro career, has now hit out at both Jake and Logan Paul.
The 26-year-old American star is hoping that Askren beats Jake in their upcoming fight as she slammed the YouTuber for claiming boxing is "easy."
Shields told My Betting Sites: "I like when the older fighters come back, like Roy Jones versus Mike Tyson.
"I think Jake Paul and his brother are more like clown shows, to be honest. But they're making money, they're using their platforms, but it's not real boxing.
"Respect to them for training, I guess -- but I'd much rather see Mike Tyson versus Evander Holyfield or something.
"I don't want to see Floyd [Mayweather] beat up Logan Paul but Floyd can do whatever he wants, he's accomplished everything so he gets to call his own shots -- it's just something I don't want to see.
"No-one's ever mentioned an exhibition to me because they know I do real fights -- I would whoop Jake Paul's a*s, though, just because he thinks boxing is easy.
"I saw him do an interview recently where he said YouTube is harder than boxing. What, being a YouTube star is harder than being a boxing?
"He said something about posting to YouTube for 800 days straight. Big whoop, you posted a video. Do you understand what it takes to become a boxing world champion? I have trained more than 800 days. Putting up a video, for one it's free.
"You just post this s**t, the internet is doing the hard work, you're not doing nothing. So for him to say YouTube is harder than boxing, I was like man, people are giving him a platform to say all kind of dumb stuff.
"He's [Jake] picking his fights to make it entertaining, I don't know how Ben Askren box, I have no idea. I know he's been inside the cage before, he had a good record, so hopefully he has enough boxing skills to beat Jake Paul but who knows. Ben is known as a wrestler, I think."