For many people, their 30s are one of the most fulfilling and beautiful times in life, but that's not the case for Khloe Kardashian.

She called her 30s the "worst decade of her life" after celebrating her 39th birthday last week.

"I hate being in my 30s, I think it's the worst decade ever," the Good American founder wrote on her Instagram Story, where she shared a "funny" gift she received for the occasion.

The 'Kardashians' star revealed a card from friend Alexa Brenman, which featured the number 39+ on the front in bold letters accompanied by a hand showing the middle finger.

"I can't wait to be in my 40s. So this card, Alexa I don't know where you found this...but it's genius."

Khloe did not share other details about why she considered this decade to be the worst of her life. We can guess that the constant "battle" with body image and weight, being in the spotlight, Tristan Thompson's infidelities, or it just hasn't been her favorite decade...