'Real Housewives of New Jersey' Star Jacqueline Laurita -- I Could Be Mansionless!

A "Real Housewives of New Jersey" star could be downgraded from "housewife" to just plain old "wife" ... because a bank is trying to FORECLOSE on her mansion.

Jacqueline Laurita is being sued by Hudson City Savings Bank. The bank claims Jacqueline took out a $1.6 million mortgage back in 2007 on a 5,600-square-foot pad, but in Feb. 2012 failed to cough up the $10,175 monthly mortgage payment.

Big mistake ... according to the deal ... if Jacqueline misses ONE payment the bank can demand the entire balance -- which it did.

The bank is now asking a judge for permission to foreclose on the home.

It's not Jacqueline's only financial woe -- the State of NJ says she still owes over $340,000 in unpaid taxes.