Paris Hilton's mom astonishes with her beauty while her daughter flaunts her cleavage

She just proved that age ain't nothing but a number.

Kathy Hilton, who was born on March 13, 1959, celebrated her 59th birthday recently with her daughters, Paris Hilton, 37, and Nicky Hilton, 34. The famous family was spotted in Beverly Hills, as reported by Daily Mail.

The birthday celebrant wore a blue blazer and a tight denim paired with a white top. She completed her look with pink high heels and let her wavy blonde hair down.

Meanwhile, socialite Paris sported a floral print dress with a deep plunging neckline, showing off her cleavage. Wearing a pair of simple black pumps on her feet, the Stars Are Blind singer shielded her eyes with oversized sunglasses.

Just like her mother, fashion designer Nicky also went with tight denim paired with a black top. She added a cat-shaped buttons to her outfit.

Paris Jackson, the 19-year-old daughter of Michael Jackson, was also in the event. The aspiring actress-model wore a brightly colored hemp fabric hoodie paired with black leggings. She completed her look with Ugg boots.

Paris Hilton, who got engaged to actor Chris Zylka, recently supported Nicky for the launch of her clothing collaboration line, Nicky Hilton X Tolani, at the Kitson Kitross.

Social media sensations, Mila and Emma Stauffer, modeled Nicky's Mommy And Me capsule collection, according to Daily Mail.

Kathy Hilton, on the other hand, is an actress, fashion designer, and philanthropist. She began working as an actress in 1968, but retired in 1979.

Some of her notable appearances include Nanny and the Professor, Bewitched, Family Affair, Happy Days, and The Rockford Files.

Kathy hosted NBC's reality show, I Want To Be a Hilton, in 2005. She also made an appearance on The World According to Paris in 2011.

When she was 15 years old, she met Richard Hilton and they tied the knot in 1979. In 2011, she received an award from the Starlight Children's Foundation alongside Paris and Nicky.