Jessica Simpson Celebrates 39 With Bikini Photo And Memoir

While some people fret about getting a year older, Jessica Simpson is definitely not. It's the singer and actress' 39th birthday today and she is celebrating in style.

Jessica commemorated her special day with a photo posted to her Instagram. In the photo, she's wearing a leopard print bikini with a leopard print coverup and oversized bejeweled sunglasses. She cropped it super tight, so she's not showing too much skin, but she is absolutely glowing. (Standing next to a reflective gold orb doesn't hurt either.) She captioned the photo: "39 is all mine!!!"

Reminder: Jessica gave birth to her baby girl Birdie Mae Johnson four months ago. Her latest pregnancy was no picnic—she had super swollen ankles, and she also came down with bronchitis and spent some time in the hospital.

Jessica has been busy cooking up another project lately, too. She just announced she is writing a yet-to-be-named memoir. It's due out next February and will be published by Dey Street Books, People reported. “I have always felt that one of my God-given purposes in this life is to inspire people,” she told the publication. “I hope that by telling my whole story and not holding back I can help move people to walk through their fears and defeat their challenges, as I am working hard to do every day with mine. I hope readers will feel the love, laughter, tears and truth contained in every page.”

With a new baby, a book, and a birthday, Jessica has a lot to celebrate.