After clutching onto the microphone, Meghan quickly realised her error as the host did not let go of it.
The clip from the One805 Live! event went viral online, and royal commentator Tom Bower addressed the awkward moment during an interview with GB News.
Bower spoke to Dan Wootton Tonight where he analysed the Duchess of Sussex's "snub" which was caught on video.
WATCH NOW: Tom Bower talks about Meghan Markle's awkward mic moment
The commentator said: "Well it is hilarious, Meghan really did think, I'm told, that when she paid $12,000 (£9,875) for the right to go to this event and stand next to Kevin Costner, that that would give her speaking rights too.
"After all she had just come from Germany where she had been lauded at the Invictus Games.
"But that wasn't Hollywood, she wanted to do the same in Hollywood.
"She was convinced she was going to get the right to make the same sort of speech, you know the great speech about being deeply affected by all the poverty and all the rest of it.
Meghan and Harry posing with Kevin Costner
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"But they were having none of it, so she was snubbed by Hollywood."