Meghan Trainor has revealed she's welcomed her first child with husband Daryl Sabara.

The 27 year old, who announced the gender of her baby in October last year, took to her Instagram feed on Valentine's Day to announce the happy news as she posted a series of gorgeous photos of her newborn baby boy.

One snap shows the little tot wrapped up in a white babygrow under with a blue hat on his head as he sleeps soundly in a blue and white blanket.

A second is a close-up of the star's little boy, while a third shows Meghan in her hospital bed as she holds her baby after giving birth.

Meghan Trainor has given birth to her first child with husband Daryl Sabara
Meghan Trainor has given birth to her first child with husband Daryl Sabara
Meghan shared the news over Instagram
Meghan shared the news over Instagram

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Another sees Meghan's 28 year old actor husband Daryl feeding their youngster as a final snap is another close up of the baby.

In the caption, Meghan revealed his name is Riley and was born on 8 February.

She wrote: "This sweet baby boy’s due date was today on Valentine’s Day," followed by a pink heart emoji.

Meghan, who previously opened up on her battle with anxiety, continued: "We got to meet him Monday, Feb 8th! We are SO IN LOVE Thank you @darylsabara for the best Valentine’s gift ever! Welcome to the world Riley!" alongside a crying emoji.

Meghan and husband Daryl have named their baby boy Riley
Meghan and husband Daryl have named their baby boy Riley
The singer said he was born on 8 February
The singer said he was born on 8 February

Celebrity pal Nicole Scherzinger was quick to comment as she wrote: "BEST VALENTINES DAY GIFT FROM ABOVE EVER! so happy love you go to so much," [sic] followed by three pink heart emojis.

Many of her 11.7million fans also took to the comment section to offer their congratulations on the happy news.

One person wrote: "Congratulations Meghan! He’s beautiful," followed by a red heart emoji.

Another said: "Congrats!!!! What a beautiful baby boy," alongside three heart eyes emojis and two blue heart emojis.

Meghan shared a snap of Daryl feeding their newborn
Meghan shared a snap of Daryl feeding their newborn
The new mum posted a close up snap of her baby boy
The new mum posted a close up snap of her baby boy

While a third added: "Congratulations Meghan! So happy for you," with two celebration hands emojis and a red heart emoji.

Meghan also took to her Instagram stories to tell fans: "Finally got my baby boy," and added: "Skin to skin with dad is a must," followed by a blue heart emoji.

The new mum also shared a snap of herself being cuddled by her pooch Biggie. Over this, she wrote: "Biggie is proud of her mamma," with a heart eyes emoji.

Meghan announced her pregnancy with Spy Kids actor Daryl in October 2020.

Meghan shared a snap of her dog cuddling her
Meghan shared a snap of her dog cuddling her

During an appearance on the Today show, she said: “I’m very good as you can tell — it's all Christmas here.

“But there's other news that I'm dying to tell you and my heart's pounding out of my chest.”

She shouted: “Hit it, Daryl," as he proudly revealed: "We're pregnant!”

The singer added: “We're so excited we couldn't sleep. We've been waiting for so long. I was thinking about who do we tell first and I've told Hoda since I was 19, going to the Today show, 'I will have the most babies in the world’.”