Actress Chyler Leigh, who plays Dr. Lexie Grey on the hit ABC medical drama
Grey's Anatomy is expecting her third child.
The 26-year-old star and her actor/musician husband, Nathan West, who are already parents to son Noah Wilde and daughter Taelyn Leigh, are said to be absolutely thrilled about adding another bundle of joy to their brood.
The pregnancy will not be written into the character's storyline, a rep for Chyler said in a statement to
PEOPLE on Monday.