SAS Australia’s Ali Oetjen and Sunrise weatherman Sam Mac show off their vocal skills

SAS Australia’s Ali Oetjen and Sunrise weatherman Sam Mac show off their vocal skills as they perform an acoustic duet together

Bachelorette Ali Oetjen has shown off her singing skills on social media in the past.

And on Monday, the 34-year-old SAS Australia performed an acoustic duet with Sunrise weatherman Sam Mac for their Instagram fans.

The pair chose to sing a rendition of Harry Styles’ popular hit Watermelon Sugar – but it came with an unexpected twist.

Who knew they were friend? SAS Australia’s Ali Oetjen and Sunrise weatherman Sam Mac showed off their vocal skills performing an acoustic duet together on Monday

As they sang the catchy chorus, Ali pulled out a large slab of watermelon and forced it on Sam to take a bit bite every time the word ‘watermelon’ was sung.  

The next song performed by the pair was Kokomo by The Beach Boys, which they dressed in tropical outfits for.

As Sam played the song on his guitar, the former Bachelorette showed off her moves by doing a hula dance alongside him.

Yum! The first song covered by the duo was of Harry Styles' Watermelon Sugar, which came with a twist. As they sang the chorus, Sam took a bite of watermelon, fed by Ali, every time 'watermelon' was sung

Yum! The first song covered by the duo was of Harry Styles’ Watermelon Sugar, which came with a twist. As they sang the chorus, Sam took a bite of watermelon, fed by Ali, every time ‘watermelon’ was sung

Quirky: The next song performed by the pair was Kokomo by The Beach Boys, which they dressed in tropical outfits. As Sam played the song on his guitar, the former Bachelorette showed off her moves by doing a hula alongside

Quirky: The next song performed by the pair was Kokomo by The Beach Boys, which they dressed in tropical outfits. As Sam played the song on his guitar, the former Bachelorette showed off her moves by doing a hula alongside

Their final cover was of Summer Nights from Grease, but toward the end of the song Ali changed the lyrics slightly.

She has instead sung ‘meet a boy, doesn’t look as good as me,’ which appeared to have offended Sam by her joke.  

Ali joked in the caption: ‘Serious sing-alongs with my old pal from Adelaide @sammacinsta.’

Just kidding: Their final cover was of Summer Nights from Grease, but toward the end of the song Ali spun quirky twist. She has instead sung 'meet a boy, doesn't look as good as me,' which appeared to have offended Sam by her joke

Just kidding: Their final cover was of Summer Nights from Grease, but toward the end of the song Ali spun quirky twist. She has instead sung ‘meet a boy, doesn’t look as good as me,’ which appeared to have offended Sam by her joke

Three part harmony? The blonde beauty tagged Bondi vet, Dr Chris Brown, who also does sing-alongs with the weatherman on Instagram, asking if he would want to do a three part harmony next time

Three part harmony? The blonde beauty tagged Bondi vet, Dr Chris Brown, who also does sing-alongs with the weatherman on Instagram, asking if he would want to do a three part harmony next time

The blonde beauty tagged Bondi vet, Dr Chris Brown, who also does singalongs with the weatherman on Instagram, inviting him to join them for a three-part harmony.

This isn’t the first time Ali has shown off her vocal talent, last month she sang a duet of Mariah Carey’s Hero with her pet dog Jed as he howled.

Earlier this year, she released her version of Never Knew Love Like This Before. 

Music: Earlier this year, she released her version of Never Knew Love Like This Before

Music: Earlier this year, she released her version of Never Knew Love Like This Before