to go on shopping spree
MEANING:
to shop excessively; to buy a lot of things in an extravagant way
EXAMPLE SENTENCES:
We went on a shopping spree. [ = we bought a lot of things in a short period of time]
I went on a shopping spree on Saturday.
We became friends, and went on a shopping spree in Oxford Street.
We went on a shopping spree and spent nearly £500.