Kristin Cavallari wishes her 'sensitive' son Jax a happy 6th birthday

Kristin Cavallari has not posted on her personal Instagram account since she announced her split from husband Jay Cutler on April 26.

But the 33-year-old Hills vet broke her silence on Thursday to wish her son Jax a happy sixth birthday.

'Happy 6th birthday my little man. Jaxy, you have such a sweet, sensitive side yet have the ability to make everyone laugh with your incredible sense of humor and wit,' began the mother who has two other children, Camden, aged seven, and Saylor, aged four.

Loving mommy: Kristin Cavallari has not posted on her personal Instagram account since she announced her split from husband Jay Cutler on April 26. But the 33-year-old Hills vet broke her silence on Thursday to wish her son Jax a happy sixth birthday

Loving mommy: Kristin Cavallari has not posted on her personal Instagram account since she announced her split from husband Jay Cutler on April 26. But the 33-year-old Hills vet broke her silence on Thursday to wish her son Jax a happy sixth birthday

Proud: 'Happy 6th birthday my little man. Jaxy, you have such a sweet, sensitive side yet have the ability to make everyone laugh with your incredible sense of humor and wit,' began the mother who has two other children, Camden, aged seven, and Saylor, aged four

Proud: 'Happy 6th birthday my little man. Jaxy, you have such a sweet, sensitive side yet have the ability to make everyone laugh with your incredible sense of humor and wit,' began the mother who has two other children, Camden, aged seven, and Saylor, aged four

The blonde added, 'You light up a room and make this world a better place.

'I’m so thankful to be your momma. Love you forever angel,' she finished.

In the accompanying photo the reality TV star is seen in a grey romper with bare legs as she warmly hugs her child. She appears to have no makeup on and her hair in unbrushed as she has on prescription glasses.

They are on a lush lawn by a swimming pool at what appears to be their Nashville home.

Better days: Seen with Jay in Nashville in December; they split in April

Better days: Seen with Jay in Nashville in December; they split in April

Kristin is currently looking for another house to call home now that she has split from Jay. 

Her last post from April announced her split from the former football star.

'With great sadness, after 10 years together we have come to a loving conclusion to get a divorce,' the note began as they were seen arm in arm with their backs turned.

'We have nothing but love and respect for one another and are deeply grateful for the years shared, memories made, and the children we are so proud of. This is just the situation of two people growing apart. We ask everyone to respect our privacy as we

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