Lovin' Philly is contagious. And thanks to the #WhyILovePhilly campaign, which kicked off in 2011, the concept has spread like wildfire.

The Internet has rallied. And with the power of a hashtag, residents from all walks of life have joined their collective voices and declared to the world why they love Philadelphia.

The #WhyILovePhilly Party held on Friday night at the Arden in Old City was the culmination of this year's love-fest.

Guests gathered to share photos, tell tales, and enjoy some of the best locally made food and drink the city's most talented entrepreneurs have to offer.

Click through the photo gallery for scenes from the shindig. Or scroll along at the bottom of the page for a few of our most recent #WhyILovePhilly essay submissions.