Taniya, in my post I said there is no proof that he registered the second marriage to Radhaji either. In that case the first hindu marriage takes precedence anyway.
The photo what happened exactly? Radhaji put it in that book, we saw by the state of the photo it's not a recent picture, black and white, brown spots at the back of it, if it was photoshopped probably by the CV's it was but stay in the story Taniya, Radhaji was looking for that photo all day because she had put it in that book years ago when they moved in the house, so that long back who would have thought okay let me photoshop this picture of these two and leave in the house. Then why Radhaji knew about it? Why didn't she throw it away? Or question hmm why have they put this strange woman with my husband here, it's because she knows that her husband was married before he told her remember that he was married and had one son there before he married her. So she kept the picture for the very same eventuality that is happening now, that the first wife suddenly comes in their lives she can look at the picture to see if the person is the same. That's why she kept the picture in the storeroom and didn't throw it away.
in bold: if this really had actually happened like MK telling radha that he was married already and also have a son,but the part which is missing is "whether mk did divorce meera or not before getting married to radha.These are all just assumptions and CVs have totally lost their marbles.illegitimate is the one who's born before getting married legally.