Khloe Kardashian thanked fans for sending birthday wishes in sizzling fashion on Sunday.

The reality star, 39, Instagrammed a snap of her posing in ripped jeans and a white crop top as she displayed her defined abs.

‘From the bottom of my heart thank you all for all of the birthday love!!!!! I’m still overwhelmed and speechless over your love and warm wishes!!!! I am forever grateful. This was truly such a special birthday. I feel like the luckiest girl in the world,’ she gushed in the caption.

Khloe looked incredible as she sat with her legs kicked out and her wavy hair tumbling down her chest.

While Khloe was overflowing with gratitude and happiness in the caption, she had some harsher words about her 30s while reflecting on the decade on Saturday.

The reality star gushed: ‘I cannot wait to be in my 40s!’ Saturday after celebrating her birthday earlier this week.

While cooing over one of her cards on her Insta Stories, the reality star revealed: ‘I hate being in my 30s. I think it’s the worst decade ever.’

Her 30s have included their share of upsides, such as the arrival of her children True, five, and Tatum, who will turn one this month.

However the decade also saw Khloé finalize her sensational divorce from Lamar Odom, who nearly died of an overdose in a brothel during their separation.

She subsequently had a rollercoaster on–off romance with Tristan Thompson, who fathered her two children but was also serially unfaithful to her.

Khloé was a starry-eyed 25-year-old in 2009 when she went down the aisle with Lamar, only a month to the day after they met.

The pair, who released a joint perfume called Unbreakable Bond, were rocked by his infidelities until she filed for divorce in 2013 at the age of 29.

Her divorce proceedings were still underway when she turned 30, celebrating the milestone birthday with her family on a yacht.