Kk's serial is somewhat a copy of Aaina, as I watching the old leaps before kk got married to sumit.
Renuka's nature was like Amrita Singh (Roma) as an arrogant, selfish & ambitious, Kk as simple, selfless, innocent, ideal woman as Juhi (Reema) & Sumit preferred a ideal tradional wife vs a modern girl just like Jacky shroff (Ravi)did.
As sumit always used to look up to his bhabhi kk & wanted a girl like her, in the same in aaina, Jacky also preferred a girl like Juhi & he started to develop feelings & respect for her, but he couldnt realize as he was engaged to Amrita.
Also in Aaina, Amrita chose a career over her b/f, for Renuka also her happiness came first before sumit & his family and she went for America for the beauty contest, when sumit needed her & didnt want her to go.
Another similarity was when Amrita left Jacky for her career, at that time in order to save Juhi's parents respect jacky maried juhi, similarily Sumit for the sake of family honour he married Kk.
And we all know that eventually both couples of Aaina & kk slowly developed trust, respect & understanding and then they fell in love.
Im not saying its a complete copy, but its 10 to 20 percent copy of that movie.