The actress/fashion designer has said she is "so excited" for her younger sister Sofia, who recently announced that she is expecting her first child. Nicole also recently became an aunt to her brother-in-law Benji Madden and his wife Cameron Diaz's second child, named Cardinal, who they welcomed in March. Nicole joked in a recent interview with Extra, "What I should do is I should just get a tattoo and be like, 'I am the best auntie,' and just, like, have that, you know?" The Simple Life star, 42, then recalled her first and last babysitting job.