The newly single Danish tennis star and best friend Serena Williams happily posed for photographs with a newly wed couple on Miami beach.
Williams was due to be bridesmaid when Wozniacki wed golf superstar McIlroy later this year.
McIlroy broke the engagement off in a three minute phone call which Wozniacki thought at first was a joke.
The Irish Independent reports that Wozniacki looked stunning in a striped blue bikini.
She covered up with a t-shirt when exploring her athletic side on the sand.
The tennis pair soaked up the rays for the day and, according to the paper, crashed a wedding they stumbled across.
The report says Williams and Wozniacki stumbled across a random beach ceremony and happily posed for pictures with the newlyweds as they took their first photos as man and wife.
Wozniacki had put on a brave face when it emerged 10 days ago that her former fiancé ended their engagement in a three minute phone call.
McIlroy called the wedding off after they had hired a celebrity wedding planner and sent out their invitations.
Former world number one Wozniacki had already picked her dress for the big day.
She admitted that the split ‘came as a bit of a shock’.