Hello Faith Lim, we will only start making costumes after received order & full payment, so we are sorry that it is unable to reach you within 1 week if you order it now.
**if you order standard size now (about 2-3 weeks making costume time) and use the fastest shipping method (Premium Express, 3-6 days shipping time), it will reach you around 3-4 weeks after order is paid and confirmed. (n__n)
*All shipping information (including methods, cost & estimated delivered date) will be shown in order page, before payment; you can pay extra cost to upgrade shipping method there.
*Please remember to mark down the date (you need it) in the order form when you order it. :)