What are Us Weekly's preferred partners buzzing about this Monday? Justin Bieber's 19th birthday, Sunday's episode of The Walking Dead and Alexis Bledel's new gig. Check out more stories in the roundup below.
What's hot? Check out the ultimate Spring 2013 nail polish guide. (fashionista)
In case you missed it! Read a recap of Sunday night's episode of The Walking Dead. (The Stir)
Girls' night. Kristen Stewart attended a concert in Hollywood with Katy Perry's assistant. (PopSugar)
Does she have what it takes? Girls star Lena Dunham joined improv night at the Upright Citizens Brigade. (The Daily Beast)
Bobby Rogers, a founding member of the Motown band The Miracles, has died. He was 73. (Zap2It)