"Happy Mother's Day @khloekardashian I love you," Thompson wrote on his Instagram Story on Sunday, May 9.
"Happy Mother’s Day to my Queen! You are my heartbeat!!! Without you we are nothing!" Kardashian captioned a pic of her hugging her mom.
She continued, "Thank you for EVERYTHING you do for each and everyone of us. You are love in human form. I will never be able to express how much we all love, adore and cherish everything about you But I will try every single day. I love you queen mommy."
One week before Mother's Day, Kardashian took another moment to praise Jenner. "Mommy, my guiding light, my mentor, my idol, my best friend, my Queen. You have always put my happiness first," the Good American founder captioned a series of pics of the pair.
"As a child I felt your love, I knew your warmth and your support, but your selflessness could only be fully understood when I became a mother myself. There is nothing you wouldn’t do for me, and for all of us. Thank you for everything you have done and continue to do for us. Thank you for the lessons you taught me. I love you more than you will ever know, and today and every day I celebrate you," she concluded.
Meanwhile. the NBA player's alleged mistress, Sydney Chase, spent her weekend in Las Vegas. The 23-year-old enjoyed a night out in Blume Kitchen & Cocktails.
Chase and two pals were reportedly given the A-lister treatment with a Don Julio 1942 bottle presentation and the Valentino III cocktail, which is served with a 24-karat gold leaf garnish, The Sun reported.
Thompson's legal team is reportedly looking into the scandal after Chase claimed to have hooked up with the 30-year-old and said she had receipts. Thompson's attorney Marty Singer reportedly sent a legal threat to Chase and told her to show the proof or stay quiet, in a letter obtained by TMZ. With Chase refusing to prove the alleged messages, the attorney said it leads to an "inescapable conclusion ... that they do not exist."
"It is obvious that you are a liar," Singer reportedly said in a cease and desist letter and said if she does not stop publicly "defaming" Thompson "you do so at your peril since you may find yourself in court attempting to defend your indefensible misconduct."
Chase initially denied getting the legal threats but then posted on her Instagram Story that it was "first sent to an email I no longer use."
Thompson's legal team claimed that Chase keeps "changing the purported 'facts' to fit [her] story," TMZ reported, and accused the model of making the claims for 15 minutes of fame.