CDAN – This A list country singer who is not known for her pleasant, charming personality despite at one time being America’s favorite gets a little mean when she drinks. OK, more than a little. In fact, she got so drunk at one birthday party that she began yelling and screaming at her guests and the guests of her then boyfriend who is a celebrity in his own right. Most of the guests decided to leave but she did keep the presents.
It’s Carrie Underwood! Her boyfriend at the time was Tony Romo. Source: CDAN.
Congrats to Bliss for the first correct guess, and to Liv for narrowing down the boyfriend possibilities!