By Cory Midgarden
What caused this birthday cake to go from Karmin's plate to all over their faces?
"This is a series of two pictures: The first one is of us about to eat the cake and then this is the aftermath," Karmin's Nick Noonan told MTV News. "You notice, somehow, my shirt became unbuttoned between two pictures; I don't remember how that happened."
Although we don't know the full story behind these next five Instagrams, they're the MTV News team's favorite of the week:
"Glee" star Lea Michele — who recently opened her Instagram account, introduced us to her new bike via the photo-sharing site. The picture rolled its way right into the hearts of her more than 61,000 followers with 14,583 likes and 583 comments and counting.
Also traveling on two wheels this week is Kendall Jenner. Who's that riding tandem on the "Keeping up with the Kardashians" starlet's bike? The kid sister of Kim, Khloé and Kourtney claimed the oversized stuffed bear just happens to be her "new boy toy."
Lady Gaga dropped some big news this week when she uploaded this photograph of her with Kendrick Lamar. In the caption, Mother Monster announced a collaboration between the pair, which is scheduled to drop September 6. The track is from his new album and is titled "PARTYNAUSEOUS."
Trey Songz is (crowd) surfin' USA! This particular post comes to you from Detroit and features Songz aboard a hoard of female fans. We'd say watch your hands, ladies, but we're pretty certain the "Bottoms Up" singer can handle himself in this situation.
After taking Olympic gold, Gabby Douglas is back at home and spending a little quality time with Oprah Winfrey in this Instagram. Winfrey snapped the pic in the gymnast's backyard in West Des Moines, Iowa, while taping "Oprah's Next Chapter." The episode will air this Sunday on OWN.
What was your favorite Instagram pic of the week? Share your choices in the comments!