Nice ice! Delighted Britney Spears shows off her stunning engagement ring after Jason Trawick pops the question

She took to her Twitter page earlier in the day to tell fans she was ‘still glowing’ after boyfriend Jason Trawick asked her to marry him.

And Britney Spears couldn’t have looked more radiant tonight as she showed off her engagement ring while hosting a party for her former agent beau to celebrate both their engagement and his birthday.

The 30-year-old singer donned her sparkling three carat Neil Lane diamond with pride as she posed up with her new fiancé at the Planet Hollywood Resort and Casino in Las Vegas.

Earlier in the day, Britney tweeted fans: ‘Still glowing! About to jump on a plane to Planet Hollywood in Vegas.

‘Throwing a Bday Party for Jason at Chateau Night Club. So fun. Xxoo’

Britney and Jason will be celebrating their engagement with a private gathering at the resort, before moving on to a celebratory dinner at the Chocolate Lounge at the Sugar Factory in the Paris Hotel before carrying on the festivities at a dance party at the Chateau nightclub.

The pair looked happy and excited as they made their way into the resort for the party, Britney beaming as she was congratulated by staff and fans.

Of course, Vegas is familiar territory for the singer – it is where her 55 hour marriage to first husband Jason Alexander began and ended.

The Hollywood agent asked for the pop star’s hand in marriage in Los Angeles yesterday on his 40th birthday.

‘Yes, we are engaged,’ Trawick told Access Hollywood today.

Talking about the Neil Lane ring, an insider told Us Weekly: ‘He picked out something he knew she would love.’

‘He surprised her after she gave him his gifts and after they had cake last night,’ another source adds.

The 30-year-old singer, who has just wrapped her Femme Fatale tour, hinted at the news this morning on her Twitter page.

‘OMG. Last night Jason surprised me with the one gift I’ve been waiting for,’ she tweeted.

She then teased: ‘Can’t wait to show you! SO SO SO excited! Xxo.’

Sources told TMZ that her conservators gave marriage their stamp of approval.

He also did right by her father, Jamie Spears, by asking for his daughter’s hand in marriage. They will put a pre-nuptial agreement into effect before they tie the knot, according to sources.

He was widely credited with helping to steer the star in a positive direction following her 2008 breakdown.

‘We’re really normal,’ Britney said of their relationship in March.

‘We just like to watch movies. We work out a lot. We love to work out. We do stuff together like that. We take walks.’

He is also a father figure to her two sons, Sean Preston, 6, and Jayden James, 5.

‘Jason is just amazing with the boys,’ she has said.

‘They look up to him so much – they adore him. He’s their hero.’

Sin City: The couple plan to party at the Paris Hotel in Vegas tonight

Thoughts? Do you think this will be the right wedding and right man for Britney?