Dawn's maiden name is Porter but, when she wed Bridesmaids star Chris in August 2012, she decided to make a new hybrid last name.
But it appears some people don't approve of the TV presenter's decision and have been sending her hate emails - including one from a particularly vile troll.
Last night (25 June), Dawn tweeted: "The email I just got about my 'O' is the worst yet. If I knew I was going to get such abuse for it I'd just have called myself Dawn O'F***."
In a separate tweet, Dawn then added: "Or Dawn O'Beyonce."
Dawn's fans have, however, been quick to show their support: "So ridiculous that you get abuse for this!" one tweeted.
Another added: "I think it's witty and charming and romantic and b*llocks to them *Hugs*" Hear hear!
What do you think of hybrid surnames? Tell us below, as the best comment from across the website each week wins £50!
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