i highly doubt that someone will agree to make a lehnga for u in that time. but if u have relatives there then maybe u can get them to mail it to u as a parcel once its done and leav the money with them to pay the kam wala.
othrwise u can go to places like liberty or anarkali to see readymade lehngas. i was there earlier this year and found that in anarkali u have to really look for pretty lehnga (if u r really picky abt colors and designs) as for liberty, u r likely to find a decent lehnga sooner but it comes at a price. so its ur choice. if u r going just for the lehnga and going to spend 1000-1500$ + on it then i suggest u get it from wherever u r living rite now ... its not worth the trip. but if u r doing all the 'bari' shopping in lahore then its ok.
Forgot to mention, wedding is in pakistan so we are going there anyways but cant go sooner than 3 weeks... so you guys think its impossible....
how abotu readymade lehngas in Liberty, what is teh avg pricing... anyone knows? are readymade more expensive than getting one made from scratch?