'Congrats to Mrs. Theroux!' Tobey Maguire's wife Jennifer Meyer says it was 'an honor' to design Jennifer Aniston's wedding ring

They slipped on specially created wedding rings when they tied the knot this month.

And on Thursday Jennifer Meyer, who designed Jennifer Aniston and Justin Theroux's bands, took to Instagram to send her love to her longtime pal, the bride.

'Congratulations to my beautiful friend, Jennifer Aniston on becoming Mrs. Theroux,' the 38-year-old wife of Tobey Maguire captioned a close-up shot showing the actress's blingy diamond-encrusted gold band.

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Great advert: Jeweler Jennifer Meyer took to Instagram on Thursday to share this image of Jennifer Aniston wearing the wedding ring she designed at the LA premiere of her film She's Funny That Way on Wednesday

Great advert: Jeweler Jennifer Meyer took to Instagram on Thursday to share this image of Jennifer Aniston wearing the wedding ring she designed at the LA premiere of her film She's Funny That Way on Wednesday

The snap was taken on the red carpet for the Los Angeles premiere of the actress's new film She's Funny That Way on Wednesday, when Jennifer hugged her pal Kathryn Hahn.

The designer added: 'Designing Jen & Justin's wedding rings was such an honor xo.'

And on Friday she posted a double snap from the event showing the star in her Roland Mouret jumpsuit and a close up of the bling on her left hand.

Money shot: On Friday Meyer followed up with this photo captioned, 'This gorgeous girl! Jennifer Aniston at her premiere wearing a full beautiful hand of JM jewelry, bracelets & ring'

Money shot: On Friday Meyer followed up with this photo captioned, 'This gorgeous girl! Jennifer Aniston at her premiere wearing a full beautiful hand of JM jewelry, bracelets & ring'

Rev up the chic factor in Jennifer's jumpsuit by Roland Mouret

She’s debuted her diamond encrusted wedding band for the very first time, so it made sense for Jennifer Aniston to wear a simple black outfit to let it sparkle.

Wearing a sleek black jumpsuit featuring an asymmetric strappy neckline, Jen oozed sophistication as per usual in her favorite color for the red carpet, and we can’t say her love of black is getting old.

The chic one piece is from Roland Mouret’s Resort 2016 collection, and it’s undoubtedly the simplest style from the whole line. Less is more with our Jen!

We also love how it both suits Jennifer's carefree style and flatters her svelte figure, ensuring her frame is lengthened out with its wide leg style pants.

The perfect and slightly more effortless alternative to an LBD on a night out, you can't go wrong with having a black jumpsuit in your wardrobe that will never date.

Sadly, this exact style is not available to buy just yet, but you can shop around for similar styles from the high street to emulate Jen's look from the likes of Asos, Missguided and more.

* PRICES MAY NOT BE AS ADVERTISED
Close friends: The actress is good pals with Meyer, who is married to Tobey Maguire. They are seen here in October 2012

Close friends: The actress is good pals with Meyer, who is married to Tobey Maguire. They are seen here in October 2012

'This gorgeous girl! Jennifer Aniston at her premiere wearing a full beautiful hand of JM jewelry, bracelets & ring xo #jennifermeyer #xojm #jenniferaniston.'  

Meyer, who shares two children with Tobey, has long been one of the actress's favourite jewelers, according to Us Weekly.

In 2006 Jennifer wore her pal's pendant necklaces in The Break-Up and Meyer's beautiful jewelry has since been seen adorning Beyoncé, Emma Stone, Blake Lively and Jessica Biel among others, the magazine reported. 

He's her diamond geezer: Jewelry designer Jennifer and husband Tobey at an event in Los Angeles in November 2014

He's her diamond geezer: Jewelry designer Jennifer and husband Tobey at an event in Los Angeles in November 2014

She also created an engagement ring for Courteney Cox, the 46-year-old's fellow Friends alum.

Jennifer and Justin, 44, got married in a secret ceremony in the backyard of their Bel Air home on August 5. They were surrounded by a small group of their family and friends, including Lisa Kudrow, Howard Stern, Emily Blunt, and Ellen DeGeneres.

The couple recently returned from their honeymoon in Bora Bora. 

So in love: The happy couple dressed up for the Vanity Fair Oscars After Party in February

So in love: The happy couple dressed up for the Vanity Fair Oscars After Party in February

They met several years ago, but didn't start dating until they co-starred in 2012's Wanderlust. They got engaged 18 months later when The Leftovers actor popped the question on his 41st birthday over dinner at New York's Blue Hill restaurant in August 2012. 

Jennifer was at Wednesday's premiere solo after Justin jetted out of Los Angeles on Monday.

He was probably on his way to Austin, Texas to shoot the second season of HBO's The Leftovers with co-star Liv Tyler. It was reported in April that the series had moved from New York as part of a revamp.

Off to work: Jennifer was at Wednesday's premiere solo after Justin jetted out of Los Angeles on Monday. The 44-year-old may have been on his way to Austin, Texas, where his HBO show The Leftovers is due to film 

Off to work: Jennifer was at Wednesday's premiere solo after Justin jetted out of Los Angeles on Monday. The 44-year-old may have been on his way to Austin, Texas, where his HBO show The Leftovers is due to film 

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