Samantha Frost is one of the final three
Samantha Frost is one of the final three "bachelorettes". Channel 10

Sam tipped to win Bachelor's heart in South African final

MELBOURNE beauty Samantha Frost is the favourite to win Bachelor Blake Garvey's heart.

The reality dating show's two-part final starts tonight with Garvey whisking the three final bachelorettes - Frost, Lisa Hyde and Louise Pillidge - off to South Africa.

Based on promotional footage it looks like Frost will get up close to some great white sharks with Garvey, while Hyde will visit some local children at a Capetown school and Pillidge will go on safari.

SportsBet has 25-year-old Frost as the woman to beat at $1.70 odds, while Hyde is the runner-up at $2.50 odds.

Brisbane events coordinator Pillidge is the dark horse at $6 odds.

Blake's final three: Lisa Hyde, Louise Pillidge and Sam Frost.
Blake's final three: Lisa Hyde, Louise Pillidge and Sam Frost. Channel 10

Thirty-one-year-old Garvey will propose to one of the women on Thursday night.

At the end of tonight's episode the final two women in the high-profile love triangle will get the last two roses.

Pillidge told APN the women get to spend time with Garvey off-camera, when they can forge more personal connections.

"We did a lot behind the scenes. Blake and I had a baking challenge between each other," she said.

"They film for so many hours and they can only use 45 minutes of it."

Pillidge is a surprise finalist after getting little on-screen time at the beginning of the season.

"Even my mum said 'I don't know how you got through so many rose ceremonies when you weren't on the episodes'," she laughed.

"I think it's because I just stayed away from all the drama and kept true to myself. I was there to find a potential partner."

The Bachelor airs tonight at 7.30pm on Channel 10.