It depends where you get it. If, for instance, you get it on your stomach or arm which is "stretched out", and you lose weight, then yes, it'll look different. Areas like the neck, wrist, ankle, and legs won't change much. It's hard to be specific without knowing how big the tattoo is, where it is, and how much weight is being lost - for a more definitive answer, ask your tattoo artist.
You gain weight
you get fat
You gain weight.
you gain weight.
You gain more weight
You gain a little weight.
ANSWER: Your body will absorb the fat and you will gain weight.
They may gain weight or feel sick.
you will gain some weight
you gain weight
Weight gain.
You may develop health problems. In addition, you may gain weight or lose weight.