I wouldn't be surprised if she's planning a full scale re release of the album. Compare it to Jamelia's Thank You - which was initially released in November and bombed despite the success of Superstar, then she re released it around March and it eventually went double platinum
iTunes Update
She actually has two versions charting. One from the deluxe, the other from the standard album:
#78. Kiss The Stars - Pixie Lott
#273. Kiss the Stars - Pixie Lott