Nick Loeb and Sofia Vergara
12/15/2011 AT 05:55 AM EST
had her boyfriend Nick Loeb
on her arm while hosting an intimate birthday party for her longtime manager Luis Miguel in L.A. The Modern Family
star (and Screen Actors Guild Award nominee
) sported a black evening gown for the soiree, planned by Marley Majcher (founder of The Party Goddess), which featured an eclectic menu – including chicken empanadas, sea bass and filet mignon, followed by some red velvet birthday cake.