The couple tied the knot after a whirlwind courtship in 2009 and romantic Lamar personally chose a stunning bouquet for his wife to celebrate her turning 29 on Thursday (27.09.13).
A source told HollywoodLife.com: ''Lamar personally picked out flowers for her. He hand-picked them, but had them wrapped with all the bells and whistles and delivered. Khloe's a simple girl, much more easy going and more low-key than her sisters. She's appreciative of the smaller things, the significant things, Lamar does for her.''
Khloe will celebrate her fourth wedding anniversary with the Los Angeles Clippers player in September, and recently revealed the couple are happier than ever and no longer feel under pressure to have a baby.
She said: ''I love my little lamb. He's pretty cute.
''Time flies. Time really does fly. And I consider myself a newlywed. Four years is a lot in this weird world that we're all in, but it's not a lot in the grand scheme of things.
''I've been married almost four years now. I'm still in my newlywed phase is what I call it, so whenever it's time for me to have a baby, that's when it's gonna be time.''
While Khloe's sister Kim has not been active on Twitter since giving birth to her daughter North on June 15, she broke her silence on the micro-blogging site to wish Khloe a happy birthday.
She wrote: ''The birthday girl! I love you so much! Khloe is the most loyal & supportive person on the planet!''