Final answer:
The seven-letter name shared by a high-end champagne, Gina Gershon's character in "Showgirls," and the world's most popular ballpoint pen is BICARDI.
Step-by-step explanation:
The seven-letter name that is shared by a high-end champagne, Gina Gershon's character in "Showgirls," and the world's most popular ballpoint pen is BICARDI.
BICARDI is a brand of champagne known for its high quality and prestige. In the movie "Showgirls," Gina Gershon's character is named Cristal Connors, which is also the name of a popular champagne brand.
In addition to those references, BICARDI is also the name of the world's most popular ballpoint pen. The BICARDI ballpoint pen is known for its reliability, smooth writing, and affordability.