She's going to let the clothes do the talking!

Khloe Kardashian dressed daughter True in an "I Wish You Were Here" t-shirt yesterday, and it just so happened to be Tristan Thompson's birthday. Coincidence? We think not!

By now, Khlo is pretty aware that her ex is a bad boyfriend, but she's learning that he isn't the greatest parent either! The reality star hoped the NBA player would take an active role as a father to their daughter, but his actions are proving otherwise.

"Khloé is getting extremely upset with Tristan because he isn’t really making any effort to be involved in their daughter True’s life,” a source dished to Us Weekly.

"Khloé understands he is on the road because of basketball and lives in Cleveland, but she just feels that Tristan has moved on. Tristan’s attitude seems to be, ‘I will see True when I see her,’” the source added.

The athlete seems more focused on partying and hooking up with hot chicks these days! He's been spotted not once but twice with model Karizma Ramirez, and last week he was sipping cocktails by the pool in Miami with a bevy of ladies.

It's never cool to be a deadbeat dad!