'Baby O'Duke!' Giuliana and Bill Rancic's son celebrates St Patrick's Day in green moustache as stars tweet their celebrations

With parents like his, it's no surprise that Duke Rancic is a natural in front of the camera.
Bill and Giuliana Rancic''s son showed his Irish side in a St Patrick's Day photo on Sunday.
Bill pasted a fake green moustache underneath his son's little nose and shared the picture on the couple's joint Twitter page.

So cute: Bill and Giuliana Rancic's baby boy Duke showed some Irish spirit by wearing a green moustache in this adorable Twitter picture

Duke still has virtually no hair on his head, but he seemed to take to his new moustache very well.
The baby wore the cutest of wide-eyed toothless grins.
'Happy St. Patrick's Day from Baby O'Duke #25percentirish @DukeRancic,' Bill wrote in the caption.
Not surprisingly, Bill caused an ehco of 'oohs' and 'awwws' immediately afterwards.

Star of the family: Bill and Giuliana love sharing every precious moment of Duke's life

'He's so adorable!!!!' one friend tweeted.
'He looks just like daddy!' another commented.
'So cute!!' a third wrote.
It was undoubtedly just what Bill and Giuliana needed after the E! News anchor unwittingly caused controversy by saying she and and her husband put their relationship first and their son Duke second.

Wearing green: Kendra Wilkinson shared this picture on her Twitter account, writing: 'My 4 leaf clover'

'We're husband and wife, but we're also best friends, and it's funny because a lot of people, when they have kids, they put the baby first, and the marriage second,' Giuliana told Us Weekly. 
'That works for some people. For us, I find, we put our marriage first and our child second, because the best thing we can do for him is have a strong marriage.'
The family recently skipped town to enjoy a holiday in Hawaii, which they probably needed after that mini hailstorm.
'In Hawaii for family vacay :) Back Tuesday,' Giuliana shared with her Twitter followers.

Feeling the music: Lauren Conrad tweeted this picture of musicians playing some Irish favourites, writing: 'Happy St. Patrick's Day!'

Meanwhile, other stars got on the green Twitter bandwagon to celebrate St Patrick's Day.
Kendra Wilkinson posted a picture of herself with three female friends, writing in the caption: 'My 4 leaf clover.'
The former Girls Next Door star, who has been busy shooting segments of the new celebrity diving show Splash, posed in a loose white top over a green bikini and flip flops, while her friends wore Irish-themed tees.
Reality star-turned-fashion designer and author Lauren Conrad tweeted a picture of an Irish band playing a song.
'Happy St. Patrick's Day!' Lauren wrote.