Kelly Osbourne was spotted pushing her newborn son Sydney — who she shares with beau Sid Wilson — in a stroller for the first time while out in Los Angeles this week.The 38-year-old first-time-mom flashed a bright smile as she donned a pair of stylish camouflage cargo pants.The former MTV personality was fully prepared for mom duty as she carried her belongings in a chic black Prada bag.Additionally, she toted a smaller quilted black leather Chanel purse with a chain strap over her shoulder.It comes after her legendary father Ozzy Osbourne regretfully announced his retirement from touring. Out and about: Kelly Osbourne was spotted pushing her newborn son Sydney in a stroller while out in Los Angeles this weekKelly was watchful over her son, whose face was covered by a chic black stroller with yellow accents.She kept snug and warm in a black hooded sweatshirt with a white heart-shaped patch on one side of the chest. The former E! fashion correspondent teamed her ensemble with a pair of black and white Converse Chuck Taylor sneakers.The beauty wore thick-rimmed black cat eye glasses over her face, which was lightly made up.Her thick and voluminous locks were styled in a center part as the icy gray locks tumbled over her chest.Osbourne first announced news that she was expecting last May in an Instagram post.She wrote to fans, 'I know that I have been very quiet these past few months so I thought I would share with you all as to why.'I am over the moon to announce that I am going to be a Mumma. To say that I am happy does not quite cut it.