
Fatly posing next to the Trump hotel sign at Waikiki Trump International Hotel. Very fat.
So here's how to calculate the length of the pig:
1. Someone measure the height of the sign
2. Post next to him in the same pose
3. Stand straight next to it.
I was trying to reverse image search the sign for heights but it appears that no one recorded that. I did find this though (certain moids, cue your sick yellow fever, she's a high school student.)
Fatrick is barely taller than a typical Asian student.

Her garland looks to be typical 100cm length from Aliexpress. 85 pixels for half of it makes 50cm. This measurement sucks but it's the best I have.

Like this:
85*2+18 pixels ~ 100+18/85*50=110.58cm, let's say the plaque is 111cm tall.

(The gap is a rendering error.)
Piggy in that pose from head to hoof is 1.66x the the bar that's 111cm, so 185.37cm
Taking note that his hooves are closer to the camera, I will use the green bars too.
For green, it drops to 1.54x, giving 171cm.
I would say he's around 175, or 5'9 at the absolute maximum.
He's pretty short.

What's the phone model?
Yeah, he's at most 175cm. Fat manlet with bitch tits.
Edit: Samsung Galaxy S10. There's an opportunity to do something very funny.

This gives up the ratio between the different perspectives.
His fat face is 2.13x his finger whereas in the photo, it was clearly a lot less because his hoof was closer to the mirror.
He's 7 of those phones from the photo and I estimated about 1.74x difference.

7*14.22*1.74=173.2cm.