Congrats to Allison Williams, better known as Marni from the hit HBO show Girls, on her engagement to her boyfriend of three years, Ricky Van Veen, her rep confirms to PEOPLE exclusively. 

In case you didn't know, she's the daughter of NBC news anchor Brian Williams and she met Ricky, who is the co-founded of the College Humor through mutual friends and have been dating for 3 years.  

BTW, her now fiance is worth like 20 million dollars!