In AOA's next set of teaser photos for their first photo book 'Hot Summer', members Jimin and Yuna dressed down to cool off from the heat.

SEE ALSO: [Updated] AOA are sweet in their 'Honey' and 'Oasis' cuts for AOA's first photo book, 'Hot Summer'

Seolhyun�and ChoA's 'Honey Cut' as well as Hyejeong and Mina's 'Oasis Cut' were already revealed, and Jimin and Yuna are taking their turn to 'Twinkle' in the final set of cuts for the photo book.

Check out more eye candy in the full release of AOA's 'Hot Summer' on July 24!