Heidi Klum, 45, sports sexy black dress for romantic evening stroll with boyfriend Tom Kaulitz, 28

Heidi Klum and beau Tom Kaulitz aren't hiding their love.

The smitten duo were seen strolling along the Hudson River in New York on Tuesday, where they were joined by Heidi's daughter Lou, eight.

The German supermodel, 45, and Tokio Hotel guitarist, 28, packed on the PDA, showering each other in hugs and kisses during their early evening promenade.

Smitten: Heidi Klum and beau Tom Kaulitz aren't hiding their love, seen strolling along the Hudson River in New York on Tuesday

Smitten: Heidi Klum and beau Tom Kaulitz aren't hiding their love, seen strolling along the Hudson River in New York on Tuesday

Love is in the air! The German supermodel, 45, and Tokio Hotel guitarist, 28, packed on the PDA, showering each other in hugs and kisses during their early evening promenade

Love is in the air! The German supermodel, 45, and Tokio Hotel guitarist, 28, packed on the PDA, showering each other in hugs and kisses during their early evening promenade

Heidi was positively stunning in a slinky black dress colorfully embroidered along the bust.

Her statuesque figure turned heads, standing 5foot9 in flat sandals and she carried along a studded bag with turquoise details for some Southwestern flair.

The mother-of-four wore her hair down loose, letting it sweep down into her cleavage.

Not needing much makeup, Klum kept things natural only brightening things up with her mega-watt smile.

Sew cute! Heidi was positively stunning in a slinky black dress colorfully embroidered along the bust

Sew cute! Heidi was positively stunning in a slinky black dress colorfully embroidered along the bust

Accessorize like an A-lister with Heidi's Prada bag

Every fashionista knows the right accessories are the key to a stylish outfit... just take Heidi Klum's latest look for instance!

The supermodel stepped out in a silky slip dress, which she teamed with black flat sandals and a western saddle bag by Prada.

We love the silver embellishment and boho style tassels, plus the chunky strap. It's ideal for giving any outfit a luxe spin!

If you're in the market for some new designer arm candy, then click right to shop this beauty over at Farfetch. Or why not try the trend for less with the picks below. New Look have a fab options for a fraction of the price...

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With mom: They were joined by Heidi's daughter Lou, who later split off from to duo so they could have some alone time

With mom: They were joined by Heidi's daughter Lou, who later split off from to duo so they could have some alone time

The graAd-schooler looked darling, sporting a Unicorn headband and yellow shoes while out walking

Adorable: The grade-schooler looked darling, sporting a Unicorn headband and yellow shoes while out walking

Yum: Before going home to be with her siblings, the group got ice cream together

Yum: Before going home to be with her siblings, the group got ice cream together

Guy style: Besides her beau Tom was handsome in a dark tee and matching slacks

Guy style: Besides her beau Tom was handsome in a dark tee and matching slacks

In the bag! She carried along a studded bag with turquoise details for some Southwestern flair

In the bag! She carried along a studded bag with turquoise details for some Southwestern flair

Besides her beau Tom was handsome in a dark tee and matching slacks. 

They were joined by Heidi's daughter Lou, who later split off from to duo so they could have some alone time.

The grade-schooler looked darling, sporting a Unicorn headband and yellow shoes while out walking. 

Before going home to be with her siblings,  the group got ice cream together.

Loved up: There was no shortage of affection between the couple

Loved up: There was no shortage of affection between the couple

Grabby: Tom was even seen reaching down to grab Heidi's rump

Grabby: Tom was even seen reaching down to grab Heidi's rump

All smiles: The couple walked hand-in-hand, chatting and smiling

All smiles: The couple walked hand-in-hand, chatting and smiling

There was no shortage of affection between the couple. 

The couple walked hand-in-hand, chatting and smiling.

They paused intermittently to embrace, also sharing several passionate kisses with Tom even seen reaching down to grab Heidi's rump.

Snapshot: Tom was keen on taking pictures during their trip out

Snapshot: Tom was keen on taking pictures during their trip out

Ex factor: Before dating the rocker, she was with art dealer and general gadabout Vito Schnabel,
Moving on? Schnabel was most recently been linked to actress Amber Heard

Ex factor: Before dating the rocker, she was with art dealer and general gadabout Vito Schnabel, who has most recently been linked to actress Amber Heard

New romance: Tom and Heidi went public with their relationship in May but the two were first linked together back in March

New romance: Tom and Heidi went public with their relationship in May but the two were first linked together back in March

Breakfast in bed: On Wednesday she enjoyed room service as she said, 'Happy 4th Of July'

Breakfast in bed: On Wednesday she enjoyed room service as she said, 'Happy 4th Of July'

Tom and Heidi went public with their relationship in May but the two were first linked together back in March.

Before dating the rocker, she was with art dealer and general gadabout Vito Schnabel, who has most recently been linked to actress Amber Heard.

Klum was married to singer Seal for nine-years from 2005 to 2014 and the duo raised four offspring together: Helene, 14, Henry, 12, Johan, 11, and Lou, eight. 

Family: Klum was married to singer Seal for nine-years from 2005 to 2014 and the duo raised four offspring together: Helene, 14, Henry, 12, Johan, 11, and Lou, eight

Family: Klum was married to singer Seal for nine-years from 2005 to 2014 and the duo raised four offspring together: Helene, 14, Henry, 12, Johan, 11, and Lou, eight

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Heidi Klum takes a romantic evening stroll with boyfriend Tom Kaulitz

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