This is a 'Secret Art' exhibition, which means purchasers won't find out the painter responsible until after they have purchased their work.
Well-known Irish faces including Ryan Tubridy, Joe Duffy, international stars such as model Helena Christensen, along with students from art college NCAD have together contributed over 400 works to the ' Chernobyl Children's Secret Art Campaign'.
It is a fundraising campaign to raise funds for medical programmes for vulnerable children in Belarus and Ukraine.
"It's a bit risky asking people to be creative if it's not their natural thing, but we had a wonderful response. It shows too, no matter how far down we are in Ireland with economic troubles, our compassion for other people less fortunate is the same as it ever was."
Long-time supporter Ali Hewson revealed that as she was "better at painting walls than canvasses".
Because she "didn't want any one to suffer with one of my paintings", her contribution was to approach famous friends, including Stipe and Christensen, to take up a brush.
Each celebrity painter got a package in the post containing a set of acrylic paints and a letter from Hewson asking them to be creative. However, it wasn't until yesterday they finally saw their fellow artists' work.
"Keep an eye out for the worst picture here. Mine is more junior infants than great master," joked presenter Sile Seoige.
All paintings will be priced at €150 and go on display at the RHA, 15 Ely Place, Dublin 2, from November 21.