Star sons and star daughters there have been aplenty in Bollywood. Then came starsisters. Now it’s their brothers Manisha Koirala and PoojaBhatt are busy coaching. Siddhartha and Rahul respectivelyare getting their lessons in the ABC of acting... N.K. Singh is alsokeeping rather busy these days. The suave and enterprising bureaucrat, formerly at thePMO, is enjoying a lecture tour at Stanford these days...Madhuri Dixit iskeeping busy too, denying to one and all that she’s two months pregnant...The storkdoes seem happy visiting the Bollywood couples. Juhi Chawla and JaiMehta had a daughter and Saif Ali Khan and Amrita Singh