The Apprentice runner-up was made up as the contrasting figures in a new feature for Now magazine.
"I honestly had no idea who he was!" Holzherr said about being compared to Styles.
"I found out what band he was in and then I googled One Direction. I admit I could see a resemblance."
He added: "I've seen pictures of him with celebrity women, who are often older. Is that right?
"Fair play to him. He's done alright for himself... Most of my girlfriends have been older than me, so there's a similarity. But I haven't gone out with anyone over the age of 35."
Asked if he had Styles's confidence at his age, he added: "Definitely not. I've always looked young for my age. I got more confidence and more attention when I grew my hair.
"I just didn't cut it for a few months and I liked it. My friends at university used to call me Shaggy."
"I've always loved Boris. Some say he's a mumbling idiot, which one could see is one side of him. But on the other hand, he talks a lot of sense and is a switched-on guy."
Read the full feature in Now magazine, out now.