Clipping means there is no more useful data there, so it cannot be restored but must be reconstructed.
http://rawpedia.rawtherapee.com/Exposure#Highlight_Reconstruction
The “color propagation” method leads to best results in cases like that and when dealing with skin.
FOTO1229_2.jpg.out.pp3 (11.7 KB)
Try to work with nature and don’t count on fixing things in post-proc, which often leads to unnatural results. In your composition the sun looks like it’s in the way. Maybe there was a better composition waiting here:
