NEED TO KNOW<\/p>\n
Kourtney Kardashian Barker<\/a> is celebrating her daughter’s major milestone!\n<\/p>\n On Tuesday, July 8, the Lemme co-founder, 46, shared photos on her Instagram Stories<\/a> as she celebrated her daughter Penelope’s<\/a> 13th birthday.\n<\/p>\n At the beginning of the day, Kardashian Barker shared a sweet post to her Instagram Story showing a bedroom floor covered in festive balloons. “My daughter is 13 today,” she wrote on top of the picture. “My heart is exploding with gratitude and love for her \ud83d\ude29\ud83e\udd7a\ud83d\udc98.”\n<\/p>\n As the day went on, the mom of three shared a throwback photo of Penelope, as well as scenes from the birthday girl’s celebration. Kardashian Barker and her daughter appeared to be in Italy, with the proud mom saying she was happy to show her daughter where her own parents spent their honeymoon.\n<\/p>\n “I am so indescribably grateful for my sweet girl,” Kardashian Barker wrote over a photo of their view. “She inspires me every day to be a better person.”\n<\/p>\n Never miss a story \u2014 sign up for PEOPLE’s free daily newsletter<\/a> to stay up-to-date on the best of what PEOPLE has to offer\u200b\u200b, from celebrity news to compelling human interest stories. \u00a0<\/strong>\n<\/p>\n Kourtney Kardashian’s Instagram Story.<\/p>\n Kourtney Kardashian\/Instagram\u00a0<\/p>\n “My parents spent their honeymoon here 47 years ago, so special to get to bring my daughter here,” Kardashian Barker wrote over a photo of a town built into a cliffside.\n<\/p>\n Penelope’s dad Scott Disick also shared a post on Instagram<\/a> in honor of his daughter, which featured a younger Penelope. “I have no words 2 explain my love 4 the greatest gift in life and that\u2019s my peep aleep! Happy bday my love!” the dad of three wrote in his caption.\n<\/p>\n To round out the birthday celebrations, Penelope’s stepdad Travis Barker shared a photo of himself and the teenager on his Instagram Stories<\/a>. Barker could be seen lifting Penelope, who added a sticker to a street sign. “Happy Birthday P,” Barker wrote over the snap.\n<\/p>\n That same day, Penelope’s grandmother Kris Jenner<\/a>\u00a0shared a carousel of photos\u00a0on her Instagram<\/a> celebrating her granddaughter’s birthday. In one of the sweet pictures, Jenner could be seen smiling next to Penelope and Kardashian Barker when Penelope was much younger<\/a>.\n<\/p>\n Other throwback photos showed Penelope throughout the years, posing with Jenner while the two wore gowns, smiling next to some of her siblings and striking poses.\n<\/p>\n “My beautiful granddaughter Penelope is officially a teenager!! I can\u2019t believe you are 13 today!” Jenner wrote in her caption. “P you are such a smart, strong, confident, kind, fun, and amazing girl\u2026 You\u2019re the best daughter, sister, granddaughter, friend, cousin, and niece, and you make all of us so proud every single day.”\n<\/p>\n<\/p>\n “You already have the most amazing sense of style and such a creative spirit. Getting to watch you grow into this amazing young lady has been one of the greatest blessings of my life and being your Grandmother is a gift I cherish every single day. The world is yours my sweet P, and I love you beyond words!! \ud83d\udc96\ud83c\udf82\ud83e\udd0d.”\n<\/p>\n “My baby girl is 13 \ud83d\ude29\ud83e\udd7a\ud83d\udc98,” Kardashian Barker wrote in the comments.\n<\/p>\n Penelope’s aunt Kim Kardashian also shared photos of the newly minted teenager on her Instagram Stories<\/a> in honor of her birthday. The SKIMS co-founder reshared fan collages of Penelope, who could be seen posing with some of her cousins.\n<\/p>\n Kardashian Barker shares daughter Penelope and sons Mason, 15, and Reign, 10, with ex Scott Disick. She is also mom to son Rocky Thirteen, whom she shares with her drummer husband, Barker.\n<\/p>\n