The new issue of Glamour magazine takes a look at celebrity siblings and features Katherine and her sister Meg dressed up in the fall's chicest clothes.

In the article, which takes a look at the important role sisters play in supporting their famous siblings, Katie explains how Meg is always there for her and her and baby daughter Naleigh.

Glamour Magazine: My Sister's Got Style Katherine Heigl & Her Sister Meg Share A Hug For Glamour Magazine

"I used to say this poem to Meg, 'Not born under my heart, but in it.' Now [my daughter] Naleigh has her as someone to talk to about the intimate experience of being adopted," she said.

Visit Glamour to read more from the article and check out the September issue of Glamour magazine which is currently on newsstands.