The 24-year-old has a brilliant record against Paolini, winning all five of their meetings.
Speaking in her on-court interview, she said: “I am super happy – I was not expecting this. I just did my job, knew what I wanted to play and I went for it.
“I’m happy I kept the momentum going until the end of the match. Jasmine, you can’t let her get back in the game because she’s a fighter. I just wanted to go for it, and go for my shots.”
This was as straightforward a win as Swiatek could have hoped for, wrapping up the opening set in a mere 30 minutes and breaking last year’s Wimbledon finalist three times in the process.
Paolini looked to turn the tables after breaking Swiatek at the start of the second, but the four-time French Open champion immediately broke back.
The former world No. 1 broke through Paolini’s serve again to go 4-2 up, before wrapping up the contest on her third match point.
“For sure it’s a change because usually I don’t feel this good on grass,” said Swiatek.
“But I have to say I worked hard for me to feel comfortable and I had also more practice days on grass. I think all of it together can make a difference at the end. I’m really enjoying my time here, and I think that you can also see that on court.”
Swiatek holds a 6-4 win-loss record against Pegula but lost their most recent meeting at last year’s US Open.
On the final, Swiatek said: “Jessica can really mix up the rhythm and obviously she plays a flat ball that is tricky on the grass, so you need to stay low on your legs…I’ll just focus on myself and I’ll be ready.”
After taking on Pegula on Saturday, Swiatek’s focus will shift to Wimbledon and her quest to win a first Grand Slam title on grass.
Her path to the final became clear earlier on Friday, after the main draw took place.
Gauff heads to SW19 looking for a second Grand Slam title this calendar year after her victory at Roland-Garros.
Like Swiatek, Gauff has not enjoyed her visits to Wimbledon, having yet to progress beyond the fourth round.