Yes, 4. Three of them are litter-mates & act like 3 parts of the same cat. One of them has insanely long, long hair. They are 23, 20 & 17 lbs - the "baby" coon landed on our doorstep a year ago, lost & sick in the woods & about 4 wks old. He's now hitting about 12-13 lbs & hasn't hit his growth spurt yet - they have a delayed spurt typically, around 2-3 yrs old. They are the most lovable, happy bunch. They hug & groom each other, spoon together to nap, etc. They "taught" our other cats this dynamic & people are always commenting on how they are not like any other pets, they are a Family themselves & with us.
In addition to the Siamese, we have 3 identical, solid-black cats that are on the lower side of average, like 8-9 lbs. (8 cats total) So I am guessing that with myself & RAH's-almost 200 lb frame, there was also approx. 75-85 lbs of cat sharing my bed last night.