Take a selfie, holding frame for support (5)
I believe the answer is:
easel
'frame for support' is the definition.
(frame supporting an artist's canvas)
'take a selfie holding' is the wordplay.
'holding' indicates the answer is hidden within the clue.
'EASEL' can be found hidden inside 'take a selfie'.
(Other definitions for easel that I've seen before include "Blackboard supporter" , "Frame for a canvas" , "Painter's support" , "Artist's tripod" , "supporter of the arts" .)