Rihanna closed out day one of the 2012 iHeartRadio Music Festival at Vegas’ MGM Grand Garden Arena, last night. And, in normal RiRi fashion, she performed in a super short slinky sequins tank by Jeremy Scott, boots, baseball cap turned to the side, and a deep violet lip.

Anyone else crushing on RiRi’s new short hair do? Because I surely am. Love, love, loves!

The 24 year old superstar/fashion icon sang a few of her early hits as well as my iPod favorites which are always on repeat - “We Found Love,” “Birthday Cake,” and “Where Have You Been.” It’s obvious that Rihanna is just as addicted to Instagram as I am. Immediately after the show she tweets and grams a few pics as evidence she had a blast.

Wondering what #ElvisExclusiveWednesdays are? She revealed that her new single ”Diamonds” will world premiere on the “Elvis Duran Show” at 8am ET on Wednesday.