Ultimate Bollywood puzzle - Fifth Round

A and B, who starred opposite each other in movie C, were incidentally cast as brother and sister in the movie D as child artists. D was directed by E, who also went on to direct the cult classic F, in which G appeared as a child artist. G, who had also appeared on a tin of baby food, was cast opposite A in H, his debut movie as a grown-up actor. H was directed by I, who used to direct blockbusters such as J, but has gone kind of bonkers lately. J starred A and K in the lead. K was cast as a child actor in the hit movie L, where he went to pee in the middle of the title song. One of K's hit movies had him playing uncle to three kids, one of whom was played by M. M was seen recently in the mindless comedy N, which also starred O. O's uncle P starred as a chubby boy in movie Q as the younger version of his father. As a child, P's wife R was cast in a double role in the movie S. R's uncle-in-law T starred in controversial movie U directed by P's father. In U, V played the young version of the rather scantily clad lead actress (and also Miss Asia Pacific) W. W and X played siblings in a 70s' flick Y. X's son Z starred as a child qawwali artist in a song in his father's movie. To close the loop, Z and A starred in a terrible movie directed by I, where they were on the run, with nothing less than a nuclear bomb in tow.