Help-DD quite skinny;DS on the large side...

[NicolaWorkHardPartyHarder]

My DD (15) is very slim;does a lot of dance and was also small as a baby.I would like her to gain some weight-however, she never seems to be able to put any on...even with the amount of carboydrates/protein etc. i get down her.
DS on the other hand (her twin) is a lot taller and stockier than her. Never stops eating-which, of course , is completley normal for a teenage boy,but it's always trans-fat packed junk food-have tried (and failed) to get him more aware of his eating habits.He is not very overweight,just by a few pounds (it flucates). He has a podgy-ish belly which surely can't be v. good for his self-esteem;does not have a lot of muscle.I don't want to have to have one child eating one thing,whilst the other is eating another meal....any suggestions?
p.s:Don't want DS to 'lose' weight exactly; just want him to stop gaining so much.Both have finished growing. xxx

Nicola, I don't think it sounds like your son has actually stopped growing. My DS is 14 and I am just trying to pack him full of food - he's always hungry - that is just about ok. Chicken and potato wedges, spaghetti in tomato sauce, bagels, milk, juice, tortillas, fajitas, bananas ....

My DD (15) eats differently, and I don't mind that. They are close in age but different.

What do you mean, btw, 'trans fats'? Hydrogenated fats and oils are rarely seen now, and trans fats that are natural such as those in dairy produce are easily mitigated by buying semi-skimmed milk and, say, olive oil-based margarines. They'll eat what's in the fridge.

my suggestion would be to chill out

are you weighing them regularly? i only ask because you say he's only a few pounds overweight and it fluctuates?
I also agree that at 15 they are really unlikely to have stopped growing, although they will have slowed somewhat

i think that you may be overthinking it, and by behaving like this you may end up giving them real issues about food and about how and what and when they eat.

do you not cook at home? why does your son always eat junk-food? if you don't have it in the house then he surely can't eat it?

It's hard to really comment without knowing more about your situation, but i would totally relax. provide healthy, wholesome food at home, don't pass on your insecurities about food and just let them be