After watching the film, I concluded they are fake.
1) the broad is always holding them up as if they will fall off. They are probaly glued on to her real two A cups.
2) the tits have been coloured darker than remaining skin on her torso
3) she doesn't really do a proper doggy because maybe they will fall off
4) the tits always move together in tandem as if they are locked together (or really 1 unit). Real tits even 2 of them will bounce separately in any movement.
5) the stud doesn't even give out a whistle or bug out his eyes in surprise in seeing her tits for the 1st time. If I saw 3 tits on a girl, I would be like 'woah!, let me touch these'.