On virtual families do you get twins by giving baby boost multiple times?

No, cos if you give them baby boost multiple times it will just decrease there chance of having kids (not just triplets or twins it will be hard just having a single baby now!) So I suggest you just keep trying to have kids or give the MALE baby boost ONCE that's what I did do NOT give the baby boost to the FEMALE I have trend this multiple times and it did not work!