After closing out his final 'Tonight Show', Conan O'Brien traded in his suit and tie for jeans and a leather jacket as he kept the night going at an after party for his 200-plus staff and celebrity guests.

"It was definitely a laid-back Conan after the show," a party-goer, who referred to the festivities as an Irish wake, told PopEater.

The atmosphere was upbeat with staff members wearing "Team Conan" t-shirts while interns wore ones saying "I'm with CoCo." Rewarding his team's loyalty, O'Brien made sure the evening's post-show shindig was well stocked.

More Details of Conan's Farewell Party After the Jump!