Katharine McPhee promises to put her clothes back on after last bikini photo from Hawaiian vacation

Katharine McPhee promises to put her clothes back on while sharing one last bikini photo from Hawaiian vacation

All good things must come to an end.

On Thursday, Katharine McPhee, 34, posted her final bikini photo from her tropical Hawaiian getaway with fiancé David Foster, 69.

The former American Idol contestant also pledged to put her clothes back on after more than a week of scantily clad vacation snaps.

The end: On Thursday, Katharine McPhee, 34, posted her final bikini photo from her tropical Hawaiian getaway with fiancé David Foster, 69

The 5ft8in Scorpion star showed off her taut tummy and slim figure in a sports bra-style pink bikini with white horizontal stripes. 

Katharine was otherwise unencumbered aside from a few bracelets on her wrists.

She displayed a playful soft smile and tousled her hair in the picture. 

Gentle ribbing: Sara Foster, 37, posted a photo on Monday showing her and Katharine in revealing swim suits, which she captioned: 'When your mother refuses to dress appropriately'

Gentle ribbing: Sara Foster, 37, posted a photo on Monday showing her and Katharine in revealing swim suits, which she captioned: ‘When your mother refuses to dress appropriately’

‘Last day in Hawaii,’ wrote Katharine in the photo caption. ‘I’ll be putting my clothes back on now, don’t worry.’

The last line was a joking reference to an Instagram post from her fiancé David Foster’s daughter, Sara Foster, 37. The 90210 actress is Katharine’s senior by three years.

Sara posted a photo on Monday showing her and Katharine in revealing swim suits, which she captioned: ‘When your mother refuses to dress appropriately.’

‘I can’t even think of a good response,’ replied the Smash star to her future step-daughter.

Time to go: The songstress wore a snorkel and rocked the hang loose hand sign on her final day in Hawaii

Time to go: The songstress wore a snorkel and rocked the hang loose hand sign on her final day in Hawaii

Tropical getaway: In addition to swimming and lounging on the beach, the singer and actress has spent plenty of time with her beau David

Tropical getaway: In addition to swimming and lounging on the beach, the singer and actress has spent plenty of time with her beau David

Katharine also marked her final day on the beach with an Instagram story in the same pink bikini.

The songstress wore a snorkel and rocked the hang loose hand sign.

In addition to swimming and lounging on the beach, the singer and actress has spent plenty of time with her beau David.

The couple were also joined on their Hawaiian vacation by David’s daughter Sara and Katharine’s mother Peisha and sister Adrana. The whole family has been staying at the Four Seasons Resort in Lanai.

The couple have been engaged since June 2018. 

Whole family: The couple were also joined on their Hawaiian vacation by David's daughter Sara and Katharine's mother Peisha and sister Adrana

Whole family: The couple were also joined on their Hawaiian vacation by David’s daughter Sara and Katharine’s mother Peisha and sister Adrana

Luxury vacation: The whole family has been staying at the Four Seasons Resort in Lanai

Luxury vacation: The whole family has been staying at the Four Seasons Resort in Lanai

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