Artists Lesley Whale and Keedah Throssell are in for a surprise when their exhibition opens at the Bas, Moruya.
The artists will each create a "secret portrait" of the other, to be unveiled at the exhibition opening at 6pm on Friday, July 12.
Eurobodalla Shire Council's arts coordinator Indi Carmichael said the Moruya exhibition's opening night would "provoke a range of responses".
"It won't only be attendees who should prepare to have their cages rattled," Ms Carmichael said.
"The portraits will anchor the show. Lesley is hyper-realist in her approach to art but Keedah's portrait of her will be very abstract - and vice versa.
"Each portrait will act as a gateway into the other's realm."
A council spokesperson said as artists and friends, the pair shared common interests but their divergent modes of expression made Like Chalk and Cheese a show all about difference - celebrating the two sides of the same coin.
"I really encourage people to come to the artists talk from 11am on Saturday 13 July. Not only will Lesley and Keedah talk about the exhibition and their broader arts practice but they'll respond to the portraits while the surprise is still fresh," Ms Carmichael said.
"I've seen one of the portraits already and it's really fun.
"The art, the way they go about making art, and the way they each live their lives can't be pulled apart."
Like Chalk and Cheese will be the sixth exhibition at the Bas since it opened in late February 2019, and the third to feature local artists.
The exhibition opens at 6pm on Friday, July 12. The artists will speak at the Bas from 11am on Saturday, July 13. The exhibition will run from Saturday, July 13, to Sunday, August 4.
The Bas is open 10am-4pm, Tuesday - Sunday.
For more information, visit www.thebas.com.au/exhibitions