1 of 12
2 of 12
3 of 12
On Feb. 9, Duff adds a pop of yellow – and a chic, multi-colored paisley scarf – to her gray and black ensemble for a leisurely walk in Beverly Hills.
4 of 12
For a day out (Dec. 29) with husband Mike Comrie in Beverly Hills, the expectant actress ups her style with an art-print cape-style shirt, navy jeans, cool shades and sky-high brown heels.
5 of 12
In a mustard knit minidress, The Girls black leggings and knee-high buckle boots, Duff stylishly hosts Danskin's "Move for Change" campaign event at Santa Monica's ICE rink on Dec. 10. “Now that I’m showing I’m kind of like, ‘Well, it’s there, and everyone knows it’s there,’ so I think it looks better to wear tighter clothes,” the actress told PEOPLE about her evolving maternity style.
6 of 12
On Dec. 2, the mom-to-be keeps a low profile – and her bump undercover – in a chic floppy hat, cozy sweater and leggings paired with a Hermès Birkin tote and low-heeled booties.
7 of 12
8 of 12
Talk about comfy! While stepping out in Toluca Lake, Calif., on Oct. 29, the actress plays it cool in a black maxidress, light tie-dye jacket, low-slung belt and flip-flops.
9 of 12
Wearing a roomy cream top and purple shorts, a radiant Duff hits the stage at West Hollywood's The Grove shopping center to chat with Extra host Mario Lopez about her new novel, Devoted, on Oct. 14.
10 of 12
While promoting her new book in N.Y.C. on Oct. 10, the mom-to-be opts for a bright orange blazer and navy tribal-print dress for an appearance on Good Morning America for day and glams it up in a red-and-black print dress, polka-dot tights and pink-and-red striped platform pumps for an evening event at Barnes amp Noble.
11 of 12
In Toluca Lake on Sept. 24, Duff proves patterns and pregnancy do mix in Funktional's Mayan Knit Skirt paired with a black top and YSL tote.
12 of 12
Another Bachelor Nation Baby! Erica Rose Expecting Second Child
Coco & Chanel Hit the Beach in Matching Swimsuits, Plus More Adorable Mother-Daughter Twinning Photos
The Diaper Games! Another Baby on the Way for Stanley Tucci, 57, and Wife Felicity Blunt
From Kylie's Ferrari to Beyoncé's Blue Diamond: Hollywood's Charming & Spectacular Push Presents
Liam Payne Celebrates Son's 1st Birthday with Sweet Post: 'Where Does the Time Go?'