Heidi Klum sizzles poolside in bikini photo shoot as she celebrates her 52nd birthday

Heidi Klum is turning up the heat just in time for summer The German-born supermodel slipped into several string bikinis and basked in the sun for a photo shoot giving her million Instagram followers a glimpse The former Victoria's Secret model posed in a bold purple bikini with gold embellishments as she leaned on a glass balcony Klum gave a fierce and sultry look as her blonde wavy curls were styled down HEIDI KLUM POSES TOPLESS BY THE POOL TO CELEBRATE HER ST BIRTHDAY LUCKY AND LUCKY On Instagram her caption mentioned summer and she collaborated with the Italian fashion company Calzedonia In another bikini photo Klum flaunted her fit physique in a light blue suit She revealed off her toned abs and posed in front of an infinity pool with a city skyline in the background I am ready for summer with my Calzedonia Are you her social media caption revealed In a video shared on Instagram Klum put a variety of bikini-clad looks on display She was all smiles and frolicked poolside as she posed in the water Her last video frame was with her backside to the camera as she established off her cheeky bikini One of her summer looks was a maroon bikini with a gold hook in the middle In addition to her bikini photo shoot Klum highlighted her nd birthday with special moments on social media This is she wrote as a caption earlier this week APP USERS CLICK HERE TO VIEW POSTIn the carousel of videos and photos a balloon was floating in the air that reported Happy Birthday Heidi She also had a birthday cake with floral designs included in her birthday post CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTERShe posed with her husband Tom Kaulitz as he worked the grill for a gathering A band also played at the event for her birthday festivities In another video dogs were playing in a yard with a large colorful balloon displayed in the background Klum and her German guitarist husband Kaulitz tied the knot in The America's Got Talent judge has three children with ex-husband Seal and one daughter Leni Klum with her ex Flavio Briatore Seal and Klum first met when the model was two weeks pregnant with Leni Seal adopted Leni when she was years old