Karrueche Tran vs. Beyonce: Chris Brown's Instagram #WCW Angers (Ex) Girlfriend, 'Respectful' Boob Photo Ruins Birthday Engagement Proposal?

Chris Brown is a fan of Beyonce's inspiring talent (and perhaps ample cleavage). But respectfully, of course!

On Wednesday (April 15), the hip-hop superstar deemed Jay-Z's stunning wife his official #WCW on Instagram:

chrisbrownofficial: "Respectfully my WCW... Talented individual as well as a wonderful mother and one incredible role model..."

How sweet! For those MstarsNews readers still confused, WCW stands for "Woman Crush Wednesday."

Innocent enough, right? Well, some fans immediatedly blasted Breezy for including a photo of Queen Bey, where her ta-tas are obviously on full display (via MediaTakeOut.com):

Loyal BeeHives were not impressed, and started blasting the "Loyal" crooner on the popular social networking site. So 25-year-old Brown quickly deleted the post.

Wonder if (ex) girlfriend Karrueche Tran took notice? Rumors suggest that the aspiring model has yet to forgive her former beau, but Brown's ready to make a huge leap in order to win back her heart. Apparently, he's planning to propose marriage on her 27th birthday in May. As MstarsNews previously reported:

"Chris doesn't want to lose this girl. She's by far the most impressive woman he's had a relationship with in his entire life. He's been watching, and re-watching her interview and one thing keeps on sticking out to him: her wiggling her ring finger and saying she'd marry him... He knows thats what she's always wanted. When they've discussed the idea in the past she lit up like fire. She was so happy and told him she'd love to be Mrs. Brown... Chris is really thinking about his future and he sees Karrueche there. If marrying her is what it's going to take to have her, he's considering it. He wants to step it up and show her he's serious about her, their relationship. He may just pop the question to her on her birthday to show her that he's a man of his words and that he's ready" (via HollywoodLife.com insider).

Good idea, or huge mistake?