Boa Hancock is a fictional character from the manga and anime series One Piece. She was introduced in the story in chapter 516 of the manga and episode 408 of the anime, which were both released in 2009. As such, she has not aged in the sense that real people do, but she remains a popular character among fans of the series.

In the One Piece story, Boa Hancock is the empress of the island nation of Amazon Lily, which is inhabited entirely by women. She possesses the power of the Love-Love Fruit, which allows her to turn people to stone with a single glance if they are attracted to her. She is also a member of the Shichibukai, a group of seven powerful pirates who are granted immunity from the Navy in exchange for their services.
As a fictional character, Boa Hancock does not have a specific age in the way that real people do. However, she is believed to be in her mid to late twenties based on her appearance and backstory. According to the One Piece Wiki, she was born on February 2nd, but no year is specified.
In terms of her physical appearance, Boa Hancock is depicted as a tall and slender woman with long black hair and blue eyes. She is often seen wearing revealing clothing that emphasizes her curves and beauty, as she is considered one of the most beautiful women in the One Piece world. Her distinctive outfit includes a red and white dress with a slit up the side, as well as a cape and high-heeled shoes.
Boa Hancock’s backstory reveals that she was once a slave on the island of Mariejois, which is the capital of the World Government in the One Piece world. She was rescued by the pirate Fisher Tiger, who was himself a former slave, and he inspired her to become a pirate herself. She eventually rose to power as the empress of Amazon Lily and joined the Shichibukai.
In terms of her role in the One Piece story, Boa Hancock is primarily a supporting character who is associated with the Straw Hat Pirates, the main protagonists of the series. She initially encounters the Straw Hats when they crash land on Amazon Lily, and she develops a romantic interest in the captain, Monkey D. Luffy. Although Luffy is initially oblivious to her affections, he eventually saves her from a powerful enemy and earns her respect and admiration.
Boa Hancock also plays a role in the larger political landscape of the One Piece world, as a member of the Shichibukai. The group is disbanded during the series, and Hancock is eventually forced to ally herself with Luffy and his crew in order to protect her people from the Navy. She is a powerful fighter in her own right, with exceptional physical strength and agility as well as her stone-turning ability.
In conclusion, while Boa Hancock is a fictional character and does not age in the same way as real people, she is believed to be in her mid to late twenties based on her appearance and backstory. She is a popular character in the One Piece series, known for her beauty, power, and association with the Straw Hat Pirates.