Why Did Sasha Alexander Create Her Own Holiday?

While holiday time is traditionally all about family, Sasha Alexander wanted to create a special day just for her friends.

“At the end of every year I always feel very reflective, and so I always do a gratitude dinner or a gratitude lunch to thank [my girlfriends] for being there for me, and for being amazing women,” the actress, 41, told PEOPLE of her unique holiday tradition.

Sasha Alexander Shares Her Rule for Sibling Squabbles

“Lucia can be very nurturing to him, she’s a very loving and kind little girl … She can also know how to prod him exactly the way that would make him cry the whole ride home,” Alexander, 40, explains.

It's a Boy for Rizzoli & Isles's Sasha Alexander

It’s a boy for Rizzoli & Isles star Sasha Alexander.

The actress and her husband, writer/director Edoardo Ponti, welcomed a son, Leonardo Fortunato Ponti, on Monday, Dec. 20 in Geneva, Switzerland, her rep tells PEOPLE exclusively.

Leonardo joins big sister Lucia Sofia, 4½. “We are so thrilled to welcome our little Leonardo. He’s a wonderful gift and we are all in love – especially the grandmas!” the couple said in a statement.

Alexander, 37, and Ponti – who is the son of screen legend Sophia Loren – wed in Aug. 2007.