All good things must come to an end, which is an especially hard pill to swallow when it comes to Kate Middleton's flawless Australian tour wardrobe. Fortunately, she saved two of her best looks for the eve of her departure.

Earlier today, she wore a bright green, belted Catherine Walker coat-dress and her trusty L.K. Bennet nude pumps while visiting Australia's National Arboretum. She and Prince William took part in a tree-planting ceremony and met with young school children involved in local conservation projects.

Later on, Will and Kate spent their last night attending a party at the Yarralumia, the residence of the Australian head of state, in Caberra. Middleton wore a white Lela Rose cocktail dress that boasted elegant lattice work along the shoulders and waist, which she styled with a sleek chigon, smoky eyes, and drop diamond earrings.

Once Kate bids farewell to down under, we'll be going through extreme sartorial withdrawal, but at least we can take solace in her sure-to-be chic exit ensemble.

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