Rob Kardashian aka "Fat Boy" on Twitter Looks to Lose pounds and Gain Profits from Sock Line after Split with Rita Ora

Kim K's little bro, Rob Kardashian, strives to improve his personal and brand image after a drastic 40-pound weight gain, triggered by recent break up with pop singer Rita Ora.

After watching Sunday's episode of Kourtney & Kim Take Miami, it is no secret that Rob's "silent" one year relationship with ex-girlfriend Rita Ora knocked him down and "fattened" him up. "All I did was waste a lot of money and gain 40 pounds," Rob confessed to his sisters. "I need to focus on me. That's all I wanna be about."

According to Rob's recent tweets from today and yesterday, Rob seems to be on the right track and is saying R.I.P to the "Fat Boy" he used to be (see below):

"Another fat boy breakfast. Let's go! 5 mile run next. 50 pounds gots to go!" (Tweeted 4 hours ago with this instagram pic of his food.)

"This is what fat boy now has to eat for breakfast today. So much fun! Lol. Cardio time!" (Tweeted Feb 20th with another pic of healthy food.)

Under Rob's Instagram pics are comments of encouragement from fans urging him to "keep it up!" With his goal of getting back into the shape he was in 2011 during his Dancing with the Stars days, Rob is incorporating exercise and healthy eating into his daily routine.

Thatt'a boy Rob, you'll be back to your "studly" self in no time!

In addition to his recent weight loss quest, the male Kardashian is also following in his successful sisters'entrepreneurial footsteps by getting serious about his newest business venture: his high-end sock line "Arthur George." Who needs a whole clothing line when you can just focus on socks? Baby steps for baby bro Kardashian it is.

In recent news, according to a Racked.com article and Kim Kardashian's post on Celebuzz, her brother's sock line, which was originally intended for male clientele only and sold exclusively at Neiman Marcus, is now available online at the "Arthur George" e-commerce website agsocks.com. And ladies, we're in luck... Rob's line now includes women's socks as well!

"I hope that you will find the products here exciting, colorful and fashion forward! I intend to make sure that we bring a different twist to our collection while still maintaining the highest quality and finding a way to give back to the community!" The about page blurb ends with, "Rob hopes that you will love Arthur George products as you love life itself."

Rob is apparently putting one foot in front of his other (sporting his AG spiffy socks of course) and is on the road to redemption and success, now that he has a clean break from Rita. If only he could get his jealousy & insecurity issues taken care of and learn to quit whining, Rob Kardashian could be quite the eligible bachelor.