Aaron Carter Disses Justin Bieber [Again]: Commando, Calvin Klein Underwear Instagram Shade

Aaron Carter enjoys flaunting his chiseled abs on Instagram - but is the 28-year-old singer hotter than Justin Bieber?

Earlier this week, Carter seemingly mocked the "Sorry" crooner online - again:

commando, no need for Calvin Klein's

A photo posted by Aaron Carter (@aaroncarter) on Feb 5, 2016 at 2:45am PST

Remember, 21-year-old Bieber appears in many sexy underwear ads for the renowned clothing company:    

So, was Hilary Duff's ex-beau throwing some major shade at the beloved pop superstar? Well, several Beliebers are definitely NOT amused:

joniredstone7: "Lol. @CalvinKlein won't be knocking on your hot mess door any time soon, you Bieber-obsessed c*nt." 

rick__s.c1: "Gay as f*ck." 

usawinston: "but I'm sure you wouldn't reject their sponsorship amirite?" 

But, on the other hand, Nick Carter's bro does give Bieber a run for his money in the "hot body" department!

clarkedeveau: "Would love to help you out of those pants." 

i_douglas: "@aaroncarter damn, how are you so sexy? It's unreal." 

mike_loaf: "Swing by my place and I will check in person... Lol. Great pic!!!" 

alettavdh: "@aaroncarter omg! sooo hot, sexy, gorgeous... just wow, u r beautiful my darling." 

mattypop39: "Seeing a line of hair is my weakness... Aaron I can't deal."

Fresh start A photo posted by Aaron Carter (@aaroncarter) on Feb 3, 2016 at 10:54pm PST

A photo posted by Aaron Carter (@aaroncarter) on Feb 2, 2016 at 8:20pm PST

So, will Selena Gomez's former lover even respond? Meanwhile, rumors now suggest that Carter's "getting close" with cyber sensation, Chris Crocker. Are they really romantically involved?

Aaron found his candy. A photo posted by Chris Crocker (@itschriscrocker) on Feb 3, 2016 at 8:27pm PST

<3 A photo posted by Chris Crocker (@itschriscrocker) on Feb 3, 2016 at 6:14pm PST

Interesting...

 My work of art

A photo posted by Aaron Carter (@aaroncarter) on Feb 2, 2016 at 8:31pm PST

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