My Pendant has earned herself a summer holiday at the beach after completing a winning hat-trick in stylish fashion at Flemington.

The Danny O'Brien-trained three-year-old followed victories at Sandown and Moonee Valley with success in Saturday's Santa's Workshop Plate.

Ridden by Craig Williams, My Pendant was sent off the $3.30 favourite in scoring by a neck from Notation ($6.50), with Queen La Diva ($4) three-quarters of a length away third.

O'Brien said My Pendant would head to his training property at Thirteenth Beach and have a break before reappearing in mid-February.

He said the filly deserved a shot at a stakes race and indicated the Group Three The Vanity (1400m) at Flemington could be a suitable target.

"She's come a long way in a short time," O'Brien said.

"It was lovely to see her stretch out a little bit further in distance today.

"She does switch off really well and it was a solid 1400 metres today so if stamina was an issue she would have been found out.

"She's still doing a bit wrong, still wanting to lay in, but I think she's got a bright future and she could handle a rise to a mile (1600m) and possibly get a bit further.

"It's an exciting 2019 coming up for her."