Jessica Simpson is leaving little to the imagination on her milestone birthday.The fashion mogul and pop icon turned heads while celebrating her 45th birthday, slipping into a glittering, sheer ensemble for her special day.Simpson took to Instagram to show off her birthday look.SYDNEY SWEENEY AND JESSICA SIMPSON BRING THE HEAT IN SEXY SUMMER STYLES"Fancy dive into 45," the singer captioned a set of photos that featured her posing in the see-through, sparkly number.The "Irresistible" singer rocked a see-through dress with glittering mesh, layering her outfit with black underwear. Simpson wore a satin coat over her barely-there outfit. She completed her look with silver platform heels and a sparkling choker necklace.APP USERS CLICK HERE TO VIEW POSTSimpson also carried a matching black and silver clutch purse to accessorize her birthday outfit.While her blonde hair cascaded in loose waves past her shoulders, Simpson oozed confidence as she embraced another trip around the sun.Simpson had a lavish birthday celebration at Hollywood hotspot Chteau Marmont and posed with several close friends.In another photo, Simpson posed with a birthday cake.MILEY CYRUS DRIPS IN CRYSTALS WHILE TURNING HEADS WITH RISQU SHEER DRESSThe "Fade" singer kicked off her 45th birthday with a sultry video on social media as she teased new music."To start off my 45th yearround the sun, Imma gonna bright side the journey of life by choosin to be the HAPPY part of my BIRTHDAY," Simpson wrote on Instagram. "Ive been patiently waitin for yall to get a dose of #FADE from the upcomin journey through #NashvilleCanyon , Part 2."In the video clip, Simpson sits in a bathtub, wearing a leopard print faux fur coat and posing in a leather corset with sheer black tights. She held a bowl of cherries and sucked on the fruit. The singer additionally wrote the song's title, "Fade," in red lipstick on the bathroom walls.LIKE WHAT YOURE READING? CLICK HERE FOR MORE ENTERTAINMENT NEWSHer risqu birthday posts come after she released her latest musical project, "Nashville Canyon, Part 1," in March. Her project is a collection of five soul- and rockabilly-infused tunes."Discovering this music is something I did on my own," Simpson previously told People magazine. "Thank God I had Nashville. It was just a way of me owning myself and declaring it."Simpson described her first single, "Use My Heart Against Me," as "a sexy song to write.""I woke up with that lyric in my head," she said. "Its kind of craving someone that you want again, and you dont care if your heart is used against you if its just for one night. Like, give it over, just for the experience again.CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTER"I didnt necessarily want it at the beginning of writing this record. I was in a different place."I am a woman now, and I can do what I want and to have freedom in music. I think thats what youre going to feel in Nashville Canyon."Earlier this year, Simpson split with her husband of 10 years, Eric Johnson.The couple tied the knot in 2014 and share three children, daughters Maxwell and Birdie and son Ace.