SAN ANTONIO -- Since Mayor Julián Castro's keynote address at the DNC Tuesday he and his twin, Joaquin, have been all over the media.
There has been plenty of Castro confusion, causing news organizations to run corrections. It has also led to some laughs.
At the Democratic National Convention, the brothers are not only making the rounds as political rising stars, they are also creating buzz for having people seeing double.
On CNN Piers Morgan pointed out they were wearing different ties. During the keynote Julian wore the blue, Joaquin wore purple.
When reporters did not keep track of the tie they often got the two mixed up as in a CNN report when the reporter showed who he thought was Julián Castro and Sen. Marco Rubio in a story about Latinos.
It was Castro alright...Joaquin Castro.
On the website Politico.com Joaquin was also mistakenly identified as the mayor. Politico later ran a correction.
The Washington Post's Karen Tumulty tweeted Thursday: "me and the mayor of my home town. or his brother. one of them."
At the DNC the twins told me there is one easy way to tell them apart: If you look at their hands, only one wears a wedding band. Julián is the married one.
Joaquin joked on CNN that if Julián becomes president he - Joaquin - will also need Secret Service protection.
All the confusion has also given comedians great material.
Wednesday night Jimmy Fallon aired a skit where he played Julián, joking that Joaquin may be the one who gave the keynote.
Playing the part of Julián , Fallon said, "In fact, I may not even be the real Julian. Perhaps I am Joaquin right now and the real Julian is backstage. Just kidding. Or am I?"
