The designer tag was left on his suit sleeve - and fans were living for the mishap.
Perhaps a sign that the suit may need to be returned, one tweeted, "Dan is all class. Leaving the tag on his suit so he can offload it on Gumtree."
Another said, "The first step towards commitment is cutting the tags off the new suit."
"Did Dan leave the labels on his suit jacket so he can return it in the arvo?"
This follows fans picking up that the 35-year-old presented Jessika, 27, with a "fake ring".
The sparkler was made by jewellery chain Secrets Shhh.
Their website states they are the "home of the diamond alternative".