Kate Middleton & Prince William Help Plant a Tree in Australia!

Catherine, Duchess of Cambridge (aka Kate Middleton) and Prince William show off their mega-watt smiles at Echo Point with ‘The Three Sisters’ behind them on Thursday (April 17) in Katoomba, Australia.

During the visit, the royal couple was seen planting a tree at the Winmalee Guide Hall, touring the Blue Mountains suburb, observing abseiling and team building exercises at Narrow Neck Lookout, and meeting with emergency services personnel.

PHOTOS: Check out the latest pics of Kate Middleton

The day before, Kate and William were spotted arriving at Sydney Airport with their adorable son Prince George.

FYI: Kate is wearing Diane von Furstenberg.

10+ pictures inside of Kate Middleton and Prince William visiting Katoomba…