can women's legs and stomach hairs removed from her body by any other women? can we pray for having pious chlidren before we are married?

i am a 22 year woman 1)i wanted to know that, can women's legs and stomach hairs removed from her body by any other muslim or christian women before her marriage cermony(private parts are not included) 2)can we ask Allah that if he fullfills our wish we will listen bibbi fatima moojza ? is there any thing like mojza in sunnah and islam 3) can we pray for having pious chlidren before we are married? 4) can we do quran khanni for example if I have asked allah that if he fullfils my wish i will gather woman to recite quran and soorah ikhlaas on almonds for counting soorah 1000 time