Pregnant Hollywood actress Sienna Miller (“Alfie”) says she wore her boyfriend’s jeans for months. “I tried to avoid buying maternity clothes,” the 41-year-old told Vogue.

Miller is expecting her second daughter with actor Oli Green. At the beginning of her pregnancy, she was able to wear light clothing in the summer anyway, the actress explained.

Then she initially improvised: “I found clothes in my closet that could be stretched, and I borrowed Oli’s jeans for the first four months.” However, she has now outgrown that too: “I feel like I’ve probably reached the stage where I need maternity leggings.”

Miller already has an 11-year-old daughter from a previous relationship with actor Tom Sturridge. Her daughter Marlowe initially worried that the new addition to the family might be cuter than she was, Miller said. In the meantime, the girl is looking forward to her little sister.