Bella Hadid sent loving support to her older sister, Gigi Hadid, with an Instagram tribute on Tuesday to celebrate the grand opening of an Aspen store for her knitwear brand, Guest in Residence. The talented supermodel, 26, gushed that her sibling and mother of one, 27, 'works so hard' and that she was 'so proud.' The stylish duo were previously spotted enjoying a day out on the snowy slopes in the resort town for a day of skiing earlier on Monday. Having fun: Bella Hadid, 26, shared a tribute photo series on Instagram on Tuesday to celebrate her sister, Gigi Hadid, opening an Aspen store for her brand, Guest in Residence Bella showcased her sense of style for the special occasion, donning an plain, olive-green top with drawstring ties at the top. The star added a low-waisted jean skirt that fell down straight past her knees, and loosely wrapped a black belt around the waist for a stylish edge. She slipped into a pair of knee-high black boots, and additionally donned a pair of black rights and thick white socks to stay warm in the brisk Aspen temperatures. In a few of the snaps, the beauty paused for photos as she fashionably posed on a chair placed near a yellow-painted wall. 'Proud': In the caption of her photo series, the talented supermodel penned, 'I am so proud of my sister' Share Follow If you make a purchase using links on this page, MailOnline will earn an affiliate commission Walk on the wild side like Gigi wearing Paris Texas boots £625 Paris Texas 'Rosario' boots 30% off at MyTheresa Buy now If there is one style of footwear in the spotlight this season, it's got to be cowboy boots.