Fly over 1km, sporting the Top Hat, Classy Suit and Traditional Jetpack.
You will need at least 23,500 coins to purchase the three required items from The Stash. The Top Hat (7,500 coins) and Classy Suit (6,000 coins) are located under Clothing. The Traditional Jetpack (10,000 coins) is under Jetpacks.
Equip all three items and travel past the 1km mark and the achievement will unlock.