Alyson Hannigan and Joss Whedon reunite at the "Make Equality Reality" event at the Montage Beverly Hills on Nov. 4, 2013 in Beverly Hills, California. Credit: John M. Heller/Getty Images

More than a decade since Buffy the Vampire Slayer went off the air, the show's creator, Joss Whedon,  and the red headed actress who played Buff's bestie Willow Rosenberg,  Alyson Hannigan, posed together at the Make Equality Reality event in Beverly Hills,Calif. honoring Whedon's work to advance gender equality. 


The mother of two looked stunning in a little black leather cocktail dress with her red locks down. Hannigan, 39, gave birth to daughter Keeva in May 2012 and Satyana in March 2009. She's married to former Buffy costar Alexis Denisof, 47, who went on to star in Whedon's Buffy spinoff series, Angel, as ex-Watcher Wesley Wyndam-Pryce.

Hannigan and Denisof are the godparents of Arden, Whedon's 10-year-old son with wife Kai Cole. The red-headed actress, who's been playing Lily Aldrin on CBS' How I Met Your Mother for nine seasons, appeared in all seven seasons of Buffy, and even played the Scooby Gang's primary villain when she turned to black magic in the show's controversial sixth season. 

Hannigan and Denisof are known for their matching family Halloween costumes and this year they didn't disappoint, dressing as leprechauns with their two daughters outfitted as a rainbow and a pot of gold. 

Hannigan is currently wrapping up How I Met Your Mother's ninth and final season and Denisof appeared as Benedick in Whedon's acclaimed 2012 film adaptation of Shakespeare's Much Ado About Nothing. Meanwhile, the famed Buffy creator is currently working on his new ABC series, Agents of S.H.I.E.L.D., and prepping the sequel Avengers film, The Avengers: Age of Ultron