Animal-lovers and lovable actors Harrison Ford and Betty White will both be honored by the Smithsonian National Zoo and Conservation Biology Institute on Thursday, Sept. 28.

Ford and White will receive the James Smithson Bicentennial Medal “to honor their commitment to wildlife and efforts to create a sustainable planet,” according to a press release put out by the zoo. The medals will be presented during the zoo’s 2017 Monkey Business Gala. White and Ford will join the ranks of past recipients such as Robert Redford, George Lucas, Julia Child, Steven Hawking and Jacques Cousteau.

Both actors have been vocal and active supporters of conservation. Ford has teamed up in the past with the zoo on tiger conservation while White has supported organizations such as the LA Zoo Commission, the Morris Animal Foundation, and Actors and Others for Animals.

Upon receiving the award, Ford said, “we have a moral obligation to be good stewards of the Earth, a moral responsibility to our children to inherit an intact planet.” White called it a “privilege” to be honored for what she loves most in the world: animals.

The gala is billed as a “non-traditional” evening event where guests are encouraged to forgo their regular “monkey suits” and wear animal-themed clothing. The gala will take place in the Kogod Courtyard of the National Portrait Gallery and Smithsonian Art Museum. Tickets are still available.