June 28 (UPI) -- Mary Elizabeth Winstead has given birth to her first child with boyfriend Ewan McGregor, the actor's daughters Clara McGregor and Esther McGregor have confirmed.
"Welcome to the world little brother. Congratulations to my Dad & Mary - this is the greatest gift," Clara McGregor, 25, said on Instagram Sunday alongside photos of herself holding the newborn.
"Met my little brother looking like a pirate. I recommend! Welcome to the family little Laurie," Esther McGregor, 19, said on Instagram alongside similar photos.
Winstead, 36, did not previously announce that she was pregnant. The actress was first linked to Ewan McGregor, 50, in October 2017 prior to the news of the actor's split from his ex-wife Eve Mavrakis.
Ewan McGregor and Mavarakis share Clara, Esther, 20-year-old daughter Jamyan and 10-year-old daughter Anouk together. They officially divorced in 2020.
Winstead split from her ex-husband Riley Sterans in 2017 after seven years of marriage.