Speculation began swirling in February that Christina was pregnant with baby number two, which will be her first child with Matthew.
In March, Christina reportedly announced that she was expecting a baby girl during her concert in Malaysia, reports People.
The mum-of-one, who wore a khaki jacket, a black T-shirt and leggings teamed with peep-toe Louboutins, strategically covered her stomach as she left the hotel.
Last week, 'Beautiful' singer Christina celebrated Matthew's birthday with a romantic meal. The 33-year-old smiled from ear-to-ear as she placed her arms around Matthew, while showing off her sparkling engagement ring.
She said: "Birthday week for the birthday boy- Lots of love & blessings to celebrate!"
Former Voice US coach Christina got engaged to Matthew after he popped the question on Valentine's Day (14 February). She showed off her large diamond ring in a photo posted to Twitter.
Christina is already proud mum to six-year-old son Max, from her previous marriage with ex-husband Jordan Bratman.
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Watch Christina's 'Let There Be Love' video below:
Stars who have announced pregnancies this year:
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