The journalist gained increased fame as a judge on Britain's Got Talent and its American spinoff before replacing Larry King as the host of CNN's 9pm ET nightly news hour.
His enlarged public visibility has led Morgan to be more critical of how he appears when in front of the camera, he says.
"Since being on TV, I've become much more conscious about my appearance," Morgan said, according to The Sun.
He added: "You can be doing some of the best work you've ever done but people will come up afterwards and say, 'What was going on with your hair?'"
Morgan recently claimed that Prince William and Kate's royal wedding made him "proud" to be British.
Piers Morgan Tonight airs weeknights at 9pm ET on CNN in the US and at 8pm on CNN International in the UK.
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