It's been over 13 years since the first Harry Potter movie was released, but the cast of the hit film series have all but vague recollections about their first ever on-screen kisses.

Fans may remember Cho Chang from Ravenclaw House who started dating Cedric Diggory in her fifth year at Hogwarts. She made her appearance during the fourth installment of the series, "Harry Potter and the Goblet of Fire." Chang was played by Chinese-Scottish actress Katie Leung.

Despite the great success of the film series, with seven out of eight movies ranked as the 50 highest grossing films of all time, Leung has some regret towards one of the most controversial scenes in the series – her on-screen kiss with Daniel Radcliffe in the fifth movie installment, "Harry Potter and the Order of the Phoenix."

"I wish I never cut my hair the way I did," the 28-year-old actress said in an exclusive interview.

Apart from her self-described "horrific haircut," Leung also recalls her first encounter with a major film production.

"I remember being on set on the first day and being completely overwhelmed by how many people were involved," she added. "Just not having an idea of what it was like to be on a film set. I remember being really nervous and scared on the first day and consequently for another few months!"

Cho is known to have been Harry Potter's first romantic interest, their love story caught in a "Triwizard" complication involving Diggory, played by "Twilight" star Robert Pattinson.

The love of Harry's life, however, came in the form of a certain Ginny Weasley. Unlike Leung, actress Bonnie Wright, who began playing the role of the red-haired Gryffindor, said she would skip out on the chance to give advice to her 10-year-old self.

"The idea of the unknown made it that much more special," she shared. "Being so young and being innocent about it enabled everything to be quite new. I think for all of us, we were all in the same boat. None of us really knew where it was going to head. The unknown to that was quite beautiful in a way."

Ginny was the first female to be born into the Weasley family for several generations. During her first year in Hogwarts, she reopened the Chamber of Secrets, falling under the influence of Tom Riddle through his diary. She shares her first kiss with Potter in following Gryffindor's victory in the Quidditch Cup over Ravenclaw.

In the epilogue, Ginny and Harry are shown to have three children: James, Albus and Lily.

The exclusive interview was conducted at a three-day Celebration of Harry Potter event at Universal Orlando. The event was also attended by Rupert Grint (Ron Weasley), Evanna Lynch (Luna Lovegood) and Matthew Lewis (Neville Longbottom).

West coast fans may soon relive the Potter experience, with Universal Studios opening a theme park in Los Angeles.