Bradley Manning, who has requested to be referred to as Chelsea Manning, was pictured in a blonde wig in 2010.
Lawyers revealed during the trial that the soldier had emailed the above photograph to military superiors with the caption "This is my problem."
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Temperatures are predicted to reach a high of 23C.
Hunt accused companies of "turning a blind eye" to a generation of children "exposed to harmful emotional side effects" of social media.
Top temperature 24C/75F.