Two hands raised in the air, celebrating success or another joyous event.
This body position in real life is typically associated with celebration and enjoying success — so this emoji is often used in precisely these meanings. For example, it may symbolize the user's joy because his favorite?Football team won a match or because he finished some challenging and exhausting project.
This alternate meaning is that the two hands are framing (can be literally or figuratively) a photograph or motion picture shot in the same manner as the stereotypical Hollywood director sometimes shown making a similar gesture in movies or cartoons. So said, used in this way, this emoji adds a "frame" to the thing it's referring to, suggesting that it is photogenic, beautiful, stunning, clever, a great photograph, suggestive of an iconic ? Movie theme, or any such elaboration of this idea.
Raising Hands was approved as part of Unicode 6.0 in 2010 under the name “Person Raising Both Hands in Celebration” and added to Emoji 1.0 in 2015.
U+1F64C
? Person raising both hands in celebration