The new child has joined the couple's two-year-old son Vivaan Veer Oberoi.
Congratulations Priyanka and @vivek_oberoi... Lil Veer has a lil sister.. So happy for you'll.. Lots and lots of Love," Genelia Deshmukh congratulated the duo on Twitter.
The "Krrish 3" star tied the knot with Priyanka, daughter of Karnataka minister Jeevaraj Alva, in Bangalore on October 29, 2010.
Vivek will be next seen in Yash Raj Productions' "Bank Chor".