She was also spotted in Bondi without her engagement ring earlier this month.
Rumours of a breakup first started swirling in January when fans noticed that Tyson hadn’t appeared on Pia’s Instagram since September last year.
Chilean-born Pia and movie producer Tyson began dating in 2015 and announced their engagement in November 2017.
Pia met Tyson after her marriage to AFL player Brad Miller ended in 2015.
Brad and Pia share a son, Lennox, 12, and Pia has another son, Isaiah, 16, from another relationship.