And it wasn’t just the prestigious event making the curvaceous Welsh opera singer smile but also her country’s rugby Grand Slam victory over France at the weekend.

The rugby fan has sung at the team’s games for the past four years but was replaced this year by a choir at the last minute.

However, she appeared to bear no grudges as she partied the night away in the Australian city.

“Katherine simply oozed glamour,” reveals our girl sipping champagne.

“She seemed really happy to be there and was having a great time despite missing the Wales match.”

** CHECK OUT OK! MAGAZINE FOR ALL THE LATEST CELEB NEWS! **