Louis Tomlinson's baby mama Briana Jungwirth looks lovely in summer outfit as she dotes on darling son Freddie while enjoying a relaxed picnic with a pal

She has declared the last year 'the best and worst of her life'.

But it's clear to see which aspect Louis Tomlinson's ex Briana Jungwirth considers the best.

The former stylist, 24, showed off her natural maternal instinct as she enjoyed a relaxed day with her son Freddie in Los Angeles this week.

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Baby's day out: Louis Tomlinson's ex Briana Jungwirth doted on their son Freddie as they enjoyed a relaxing day out

The pretty brunette had set up an idyllic day for the tot as she was joined by a gal pal for a relaxed picnic in the sun. 

Briana - who gave birth to the One Direction star's son in January - was seen cradling him as she stared lovingly at the adorable four-month-old.

She then led him down on the ground but couldn't resist going in to kiss his chubby cheek.

Dressed in a simple white vest top and skimpy denim hotpants, the beauty looked relaxed. 

The mum-of-one laughed along with her pal as they stared in wonder at the tiny tot as he wriggled on a picnic rug.

Briana took some time out to take a call during the enjoyable day out.

Cute: The former stylist, 24, showed off her natural maternal instinct as she enjoyed a relaxed day with her son Freddie in Los Angeles this week and showered him with affection

Fun in the sun: The pretty brunette had set up an idyllic day for the tot as she was joined by a gal pal for a relaxed picnic in the sun

Close: Briana - who gave birth to the One Direction star's son in January - was seen cradling him as she stared lovingly at the adorable four-month-old

Affection: She then led him down on the ground but couldn't resist going in to kiss his chubby cheek

The pals enjoyed some snacks out in the California sun before heading home after their enjoyable day out.

Earlier this month, Briana took to social media to reveal how she had struggled with the backlash from Louis' fans after she fell pregnant.

In a Mother's Day post, she wrote: 'This past year has been the best and worst of my life,' she began.

'I was blessed with the most amazing gift - a beautiful baby boy that I grew inside of me for 9 months.

'On the other hand, I was scrutinized and harassed by thousands - which even included major media outlets whom all seemed to believe he wasn't real.' 

Summer vibe: Dressed in a simple white vest top and skimpy denim hotpants, the beauty looked relaxed

In awe: The mum-of-one laughed along with her pal as they stared in wonder at the tiny tot as he wriggled on a picnic rug 

Grub time: The pals enjoyed some snacks out in the California sun before heading home after their enjoyable day out

Ring ring: Briana took some time out to take a call during the enjoyable day out

Hands on: The brunette then carried Freddie in his car seat as they left the picnic

The journey to motherhood has been quite difficult for the pretty brunette, who went on to discuss the venom she received from others, claiming it had fuelled her to be a better mother.

'I also know that if it was said about you, you may not had the will power to hold back as much as I have. I will be strong enough to continue to embrace this journey, love my son endlessly and be kind to those who do not deserve it even if it's the last thing I'd like to do.

'Happy Mother's Day to myself. I'm proud to be Freddie's mommy,' she concluded in the post which reached her 460k followers.

News that Louis was to become a first-time dad broke in July 2015, following his brief fling with Briana in Los Angeles the previous May.

The British pop star made the move to the US, near to where Briana lives, earlier this year.

Speaking at the time of Freddie's birth, a source told MailOnline: 'Louis is already loving being a father and is so proud of Freddie. His son is his number one priority and he’s supporting Briana and Freddie in every way possible.

‘His mum and her husband are in Los Angeles with Louis to help Louis, Briana and her family in any way they can.’

Louis is now in a new relationship with actress Danielle Campbell.

New romance: Louis - who enjoyed a brief fling with Briana last year before she fell pregnant - is now in a new relationship with actress Danielle Campbell