updated 01/29/2013 AT 9:00 AM ET
•originally published 01/29/2013 AT 10:05 AM ET
A lovely 80-degree day in Austin, Texas, was just what Livingston McConaughey needed for a nice stroll in the park.
Camila, who celebrated her 30th birthday on Jan. 28, shared her happiness via Twitter, writing, “Today I am 30 years old, Livingston is 30 days old and I’m blessed with 3 healthy children…I am so thankful and full of joy!”
At the park on Sunday, she mostly kept Livingston covered in a light blanket, and was seen kissing the boy on the head.
Camila, meanwhile, was dressed comfortably in a white shirt, black leggings, sneakers and dark sunglasses.