Ujala, I think a lehnga or a gharara would be a tad much for a mehndi function with 150-200 people. An anarkali, on the other hand, would rock! You can make the pajama out of the bottom chatta patti part and the pishwas green same colour as in the lehnga and same kaam as on the shirt. Have pink accents all over instead of a pink bodice. Keep the dupatta the same. Go for a long braid coming from back to front with a paranda or a flower choti. I am not too crazy about Suneeta’s anarkali that Nomi Ansari created. To me that green was too green. Here are the pics:
