Jennifer Lopez just signed a $12 million deal to judge "American Idol" next season -- and that money could buy her 5,228 pairs of the pricey boots she wore at Fashion Week.

J.Lo rocked a sexy Emilio Pucci dress to Tommy Hilfiger's 25th anniversary party on Sunday -- and paired it with some hot, thigh high Christian Louboutin boots, which retail for $2,295.

Click the pic to get Jenny's look!