This is a vectorization of this adorable sketch by 
I actually made this back in September of '11, but I never posted it because I hadn't asked permission from the artist. Glad to finally get around to posting this!
PPG and Ponies is a great combination!
I actually made this back in September of '11, but I never posted it because I hadn't asked permission from the artist. Glad to finally get around to posting this!
PPG and Ponies is a great combination!
:origin()/pre00/6a47/th/pre/i/2011/214/2/7/one_pony_band_by_brycehebert-d42fus8.png)
:origin()/pre00/69bb/th/pre/i/2011/252/d/3/the_horror_by_brycehebert-d49b4by.png)
:origin()/pre00/6ab9/th/pre/i/2011/218/b/f/fluttershy_deathglare_by_brycehebert-d45m8bq.png)
:origin()/pre00/386a/th/pre/i/2011/257/3/d/rainbow_is_a_badass_by_brycehebert-d49vifo.png)
:origin()/pre00/f2a9/th/pre/i/2011/211/6/4/trixie_vector_by_brycehebert-d425db3.png)
:origin()/pre00/1537/th/pre/i/2011/292/5/b/blossom_is_unimpressed_by_darcowalways-d4ddjo8.png)
:origin()/pre00/9257/th/pre/i/2014/209/9/5/blossom_the_powerpupp_by_polkadottedmustache-d7spm6w.png)
:origin()/pre00/957a/th/pre/i/2013/002/c/b/bubbles_walking_a_poodle_by_mrbarthalamul-d5q81x8.png)
:origin()/pre00/8153/th/pre/i/2012/069/f/d/rainbow_dash_by_amyrose2001-d4sdfcb.png)
:origin()/pre00/bdf8/th/pre/i/2014/243/c/3/magic_girls_by_gamefanppg-d7xf4gj.png)
:origin()/pre00/8c4a/th/pre/i/2013/082/7/d/fluttershy_loves_the_ppg_by_youki506-d5yzvy3.png)
:origin()/pre00/3c3e/th/pre/i/2012/361/9/0/bubbles_as_pony_by_jerimin19-d5pb2x6.png)
:origin()/pre00/7210/th/pre/i/2012/346/f/f/unicorn_derpy_by_redink853-d5nr4l3.png)
:origin()/pre00/32a2/th/pre/f/2012/076/e/5/derpy_light_cycle_by_smashinator-d4t03t4.png)
:origin()/pre00/6ae1/th/pre/i/2012/035/6/4/derpy__s_got_swag_by_axemgr-d4ollqp.png)
:origin()/pre00/28f2/th/pre/f/2012/285/d/b/derpy_likes_flying_by_crimsonlynx97-d5hm9hc.png)
:origin()/pre00/ed03/th/pre/i/2012/021/8/e/derpy___am_fabulous_by_kooner01-d4n5mce.png)
:origin()/pre00/0570/th/pre/f/2011/276/8/6/derpy_is_a_happy_pony_by_noxwyll-d4bpemz.png)
:origin()/pre00/9a53/th/pre/f/2012/030/2/3/ooh__whats_down_there____by_shho13-d4o45an.png)
:origin()/pre00/717e/th/pre/f/2012/079/6/b/derpy_is_sorry_by_zj56-d4tchbo.png)
:origin()/pre00/69e6/th/pre/i/2012/024/9/2/muffin_surprise__by_epic_panda17-d4ngq3n.png)
:origin()/pre00/9af2/th/pre/i/2012/040/3/5/bubbly_pair_by_brycehebert-d4p4shd.png)
So that's why Derpy cutie mark is bubbles!